This invention discloses a self-centering and self-mixing semi-flexible coaxial nozzle capabilities, and its manufacturing method. The invention comprises an upper cover, a semi-flexible inner needle, a three-way casing, a three-way convex platform and an outer needle, wherein the bottom of the upper cover is screwed on the three-way casing; the central part of the three-way casing is provided with the semi-flexible inner needle and the outer needle is screwed on the bottom of the three-way casing; the semi-flexible inner needle extends to the inside of the outer needle through the head of the three-way casing; and two three-way convex platform are screwed on the left and right side surfaces of the three-way casing. The invention has the following beneficial effects: the semi-flexible inner needle self-centers via fluid dynamics to correct coaxiality errors; the three-way mixer enables passive material blending; and a sealed assembly (fixed plate, fixture block) ensures leak-proof rigidity.
The present invention relates to a device for pressure reduction and desorption of coalbed methane. The device for pressure reduction and desorption of coalbed methane comprises a gas storage tank and a pressure regulating mechanism. The gas storage tank comprises an outer tank and an inner tank. A gap is formed between each outer wall of the inner tank and each inner wall of the outer tank. An air inlet pipe and an air outlet pipe are arranged at the top of the outer tank. The upper end of the air inlet pipe and the upper end of the air outlet pipe extend out of the outer tank, the lower end of the air inlet pipe extends into the bottom of the inner tank, and the lower end of the air outlet pipe is located in a gap between the top of the outer tank and an opening in the upper end of the inner tank. The inner tank is filled with an adsorption medium. The pressure regulating mechanism comprises piston plates. Each piston plate is in the shape of a ring plate and is located between the peripheral outer wall of the inner tank and the corresponding peripheral inner wall of the outer tank. The present invention provides a device for pressure reduction and desorption of coalbed methane, aiming to solve or at least mitigate the safety risks posed to storage and transportation tanks during transport and storage, which arise when the saturated adsorption capacity of adsorption media inside the storage and transportation tanks decreases due to temperature increases.
A high-efficiency permeability enhancement device for coal-seam gas drainage, the device comprising: a high-pressure gas cylinder, the high-pressure gas cylinder being configured to store a gas medium; an air compressor, the air compressor being connected to a gas outlet of the high-pressure gas cylinder, and the air compressor being configured to pressurize the gas medium in the high-pressure gas cylinder; a drill pipe, a drill bit being provided at an end of the drill pipe; jet nozzles, the plurality of jet nozzles being evenly disposed in the circumferential direction of the drill pipe, and the jet nozzles being located below the drill bit, arranged outwards in the radial direction of the drill pipe, and in communication with the gas outlet of the high-pressure gas cylinder; and self-driven drill bits, the plurality of self-driven drill bits being evenly disposed in the circumferential direction of the drill pipe, the self-driven drill bits being located below the jet nozzles, a plurality of front spray holes being radially provided in the front end of each self-driven drill bit, and the self-driven drill bits being in communication with the gas outlet of the high-pressure gas cylinder. The device can significantly improve the gas drainage effect; and coal-seam gas drainage is controlled to be concentrated in a main borehole, such that the construction workload is small, and the gas drainage effect is good.
Disclosed are a visualization grouting device for coal and rock fissures and a test method, a test device including a visualization fissure grouting box body, a box body bracket, a grouting device and a monitoring device. A bottom plate is divided into four identical areas, rubber cushion blocks with different specifications are arranged to simulate different fissure widths and tortuosity, artificial protolith thin film is pasted inside, and a grouting hole and a plurality of pressure measuring holes are arranged in the center of the upper top plate. In the present disclosure, the grouting process of fissures under different grouting conditions, such as different fissure widths, roughness, grouting resistance and tortuosity of pore channels can be simulated, the grouting under different fissure conditions can be simultaneously simulated, and the differences of different grouting diffusion forms can be clearly and intuitively analyzed and compared through the visualization box body.
A coal and gas outburst monitoring device includes the insertion and anchoring assembly, and the pump drainage and monitoring mechanism; the insertion and anchoring assembly is vertically inserted and distributed on the sidewall of surrounding rock of coal mine roadway, and the insertion and anchoring assembly can monitor the stress change data in the sidewall of surrounding rock in real time; the pump drainage and monitoring mechanism is erected within the coal mine roadway, and the pump drainage and monitoring mechanism can cooperate with the insertion and anchoring assembly to perform the gas pump drainage monitoring for the sidewall of surrounding rock of goaf, and to obtain the gas seepage monitoring data in the surface layer and the inner layer of sidewall of surrounding rock. Thus, comparing with the database mechanism, the accurate and advanced predictions for the gas outburst can be made.
A multi-section fixed-point hydraulic fracturing apparatus, which relates to the field of hydraulic fracturing. The multi-section fixed-point hydraulic fracturing apparatus comprises a shell (1), wherein fracturing mechanisms (3) and a high-pressure steel pipe (5) are fixed in the shell (1), the fracturing mechanisms (3) are connected to each other by means of adjustment mechanisms (4), and the high-pressure steel pipe (5) is further connected to each fracturing mechanism (3). During the process of a fracturing operation on a rock stratum, if the hydraulic fracturing apparatus encounters a hard rock stratum at a certain point position, the hydraulic fracturing apparatus can break through the blockage of the hard rock stratum under the action of the fracturing mechanisms (3) and the adjustment mechanisms (4), thereby effectively avoiding the phenomenon of insufficient local fracturing or overall uneven fracturing.
The present disclosure provides a monitoring and warning device for rock burst in coal mine, which is configured for monitoring a rock mass in a drill hole, the monitoring and warning device for rock burst in coal mine includes: an integration rod, radial adjustment components, a plurality of bases, and a measuring instrument, the integration rod is extended into the drill hole; the radial adjustment components are provided on the integration rod, and have a plurality of radial adjustment ends; a plurality of bases are correspondingly provided in the radial adjustment ends, and the bases are further connected with attachment components through elastic components, and the attachment components are embedded with first strain gauges; the measuring instrument is rotatably provided in the integration rod, and is used to measure the distance between the measuring instrument and the attachment components.
E21F 17/18 - Special adaptations of signalling or alarm devices
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
8.
RHODAMINE-METHYLENE BLUE DERIVATIVE FLUORESCENT PROBE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The present invention belongs to the technical field of organic synthesis. Provided are a rhodamine-methylene blue derivative fluorescent probe (I), and a preparation method therefor and the use thereof. In the preparation method for the fluorescent probe, raw materials are easily available, and a synthesis method is simple and convenient. The fluorescent probe can achieve synchronous double-channel fluorescence recognition of intracellular ClO-and ATP, and has a detection limit regarding ClO-of 0.90 nM and a detection limit regarding ATP of 23.60 nM; therefore, the fluorescent probe can be used for fluorescence quantitative detection of ClO-and ATP, can also be used in synchronous fluorescence imaging of ClO- and ATP in cells under the stimulation of a drug, and has a wide potential application value.
C07D 491/107 - Spiro-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
C07D 279/30 - [b, e]-condensed with two six-membered rings with carbon atoms directly attached to the ring nitrogen atom with acyl radicals attached to the ring nitrogen atom
A rhodamine-methylene blue derivative fluorescent probe and its preparation method and application are in the technical field of organic synthesis. The rhodamine-methylene blue derivative fluorescent probe has available raw materials and a simple prepared method; the rhodamine-methylene blue derivative fluorescent probe can detect ClO− and ATP in cells by synchronized dual-channel fluorescence, with a detection limit of 0.90 nM for the ClO− and 23.60 nM for the ATP, and thus the rhodamine-methylene blue derivative fluorescent probe can be used for fluorescence quantitative detection of the ClO− and the ATP, and can also be used for simultaneous fluorescence imaging of ClO− and ATP in drug-stimulated cells. Therefore, the rhodamine-methylene blue derivative fluorescent probe has a wide range of potential applications.
A rubber stripping device for steel cords in a belt, comprising a main frame (1). Longitudinal movement mechanisms (2) are longitudinally and symmetrically disposed at the top end of the main frame (1), and a transverse movement mechanism (6) is provided between the two longitudinal movement mechanisms (2). A cutting tool assembly (7) is provided on the transverse movement mechanism (6) to enable transverse or longitudinal movement adjustments of the cutting tool assembly (7). In the rubber stripping device for steel cords in a belt, first, a liquid nitrogen rapid cooling and hardening device (79) is used to harden a thin layer of residual rubber on a steel cord, and then an ultrasonic high-frequency vibration device (78) performs high-frequency vibration treatment on the residual rubber on the steel cord, so as to achieve complete stripping of the thin layer of residual rubber off the steel cord. This configuration saves a large amount of labor and material resources, improves processing efficiency, and prevents potential safety hazards caused by manual handling of belts.
B26D 1/06 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
B26D 7/26 - Means for mounting or adjusting the cutting memberMeans for adjusting the stroke of the cutting member
An integrated thermal hydrolysis and crushing device, comprising a thermal hydrolysis unit (1), a crushing unit (2) and a speed change unit (3). The thermal hydrolysis unit is provided with a transmission shaft (13); a variable-pitch spiral blade (18) is additionally mounted on the shaft; the crushing unit is provided with a spiral cutting blade (23), and the bottom of the crushing unit is additionally provided with a wastewater filter screen (24) and a discharging port (26); and by means of the engagement of a driving wheel (31), a driven wheel (32) and a gear (33) of the speed change unit, rotation of the thermal hydrolysis unit and the crushing unit at different speeds and in different directions is realized. A thermal hydrolysis stage and a subsequent crushing stage are integrated into the device, thereby improving the material treatment efficiency and the compactness of the device.
China Nuclear Industry Survey Design & Research Co.,Ltd. (China)
Inventor
Zhao, Zongze
Miao, Changwei
Zhang, Yu
Wang, Cheng
Ma, Chao
He, Guangyuan
Chen, Xiaofei
Wang, Hongtao
Du, Weibing
Huang, Shanming
Li, Shixuan
Cheng, Xiaoqian
Yang, Leiku
Abstract
Disclosed in the present disclosure is a method for processing remote sensing images by fusing elevation information. The method includes the steps: acquiring an image data set, and preprocessing the image data set to obtain an image set; performing simple linear iterative clustering (SLIC) segmentation processing on the image set, introducing elevation information through weighting and setting a threshold in the SLIC segmentation processing process to obtain pre-segmentation results; updating a neighborhood relationship among clusters on the basis of the pre-segmentation results by using a data structure of a neighborhood array, and establishing a comprehensive similarity criterion of weighting combined with elevation features; and finally, for ground objects with complex elevation, setting determination conditions before merging according to elevation differences between adjacent clusters, and performing region merging by setting weight coefficients of different sizes in comprehensive similarity indexes according to determination results to complete image processing.
A cross-seam drilling and packing integrated coal seam gas extraction method is disclosed. The method comprises: forming slits in a coal and rock seam around a hole sealing section before grouting, so that all the slits are communicated with the hole sealing section of a gas extraction hole, wherein the optimal number of the slits is determined according to the following steps: step 1: manufacturing a grouting coal and rock sample; step 2: loading said sample and performing CT scanning; step 3: performing picture processing to obtain a fissure ratio; step 4: obtaining a relation formula between the permeability and the number of slits, namely formula II, and a relation formula between the fissure ratio and the number of slits, namely formula III, by using Origin software by means of curve fitting; and step 5: determining the optimal number of slits. According to the method, the number of slits is determined according to the relation between the number of slits and the fissure ratio of an on-site grouting coal and rock seam and the relation between the number of slits and the permeability of the on-site grouting coal and rock seam, and the relative best gas extraction effect is achieved by determining the appropriate number of slits of the drilling grouting section, and taking into account both the grouting sealing effect and the structural strength of the grouting layer.
Disclosed in the present invention are a self-centering and self-mixing semi-flexible coaxial nozzle and a manufacturing method therefor. Said nozzle comprises an upper pressing cover, a semi-flexible inner needle head, a three-way sleeve, three-way bosses and an outer needle head. The bottom of the upper pressing cover is threadedly mounted on the three-way sleeve. The semi-flexible inner needle head is placed in the center of the three-way sleeve, and the outer needle head is threadedly mounted at the bottom of the three-way sleeve. The semi-flexible inner needle head penetrates through the head portion of the three-way sleeve and extends into the outer needle head, and the two three-way bosses are threadedly connected to the surfaces of the left side and the right side of the three-way sleeve. The present invention has the following beneficial effects: the semi-flexible inner needle head can keep centered automatically by means of the dynamic effect of outer-layer fluids, so as to compensate coaxiality errors generated by the mechanical structure and assembling; a mixing assembly structure achieves physical mixing of outer-layer materials, which does not need electric power control and is simpler; and the present invention can maintain the sealing performance of the connection between a needle head rigid part and the three-way sleeve by means of a fixing plate, an engagement block and a sealing sleeve.
A real-time monitoring system and method for a coal mine roof fracture during a tunnel excavation process. The monitoring system comprises: a tunnel model construction module, which is used for constructing a three-dimensional tunnel model; a roof monitoring module, which is used for acquiring roof fracture development data in real time; a fracture analysis module, which is used for acquiring a fracture development rule according to the three-dimensional tunnel model and the roof fracture development data; a fracture formation prediction module, which is used for determining a formation moment of a fracture according to the fracture development rule; and an early-warning processing module, which is used for giving an early warning according to the formation moment of the fracture. In the monitoring method, a roof crack development rule is further used to determine and give respective early warnings on formation moments of a single crack and a penetration fracture. A three-dimensional tunnel model is constructed and multi-source data is acquired, such that a real-time simulation analysis of a roof morphologic change and a fracture development process is implemented, the formation moment of a single fracture is predicted by means of a fracture development rule, and the formation of a penetration fracture is predicted.
The disclosure provides a real-time monitoring system and a real-time monitoring method for coal mine roof fractures during a roadway tunneling process, where the monitoring system includes a roadway model building module for building a three-dimensional model of a roadway; a roof monitoring module for obtaining roof fracture development data in real time; a fracture analysis module for obtaining a development pattern of roof fractures according to the three-dimensional model of the roadway and the roof fracture development data; a fracture formation prediction module for judging a fracture formation time according to the development pattern of the roof fractures; and an early warning processing module for early warning according to the fracture formation time.
E21D 9/00 - Tunnels or galleries, with or without liningsMethods or apparatus for making thereofLayout of tunnels or galleries
E21C 39/00 - Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
17.
2 DIRECTIONAL FRACTURING AND HYDRAULIC FRACTURING COUPLED PERMEABILITY ENHANCEMENT
22 directional fracturing and hydraulic fracturing coupled permeability enhancement. The gas extraction device comprises: a blasthole and control holes, the control holes being symmetrically provided at two sides of the blasthole; a flying stopper, which is mounted in the blasthole; a first hole packer, which is fixed at one end of the flying stopper; and a coupled permeability enhancement assembly, one end of which is in threaded connection with the end of the first hole packer away from the flying stopper, and the other end of which is in threaded connection with a second hole packer. The coupled permeability enhancement assembly is located at a position from which gas is to be extracted; and when a plurality of positions are subjected to extraction, the end of the second hole packer away from the coupled permeability enhancement assembly is in threaded connection with one end of the flying stopper, and the other end of the flying stopper is sequentially connected to the first hole packer, the coupled permeability enhancement assembly and the second hole packer.
242424244 enables the morphology of ettringite to change from needle-shaped to fiber-shaped. The initial setting time and the final setting time are respectively shortened by 39% and 38%; and the 3 d compressive strength and the 28 d compressive strength are respectively increased by 76% and 228.80%. The present invention has a relatively good reference effect on the performance regulation and control of an aluminate cement grouting material.
Modified fluorgypsum, a modified fluorgypsum product and a preparation method therefor. The preparation method for the modified fluorgypsum comprises the following step: mixing and grinding quick lime and fluorgypsum; and the preparation method further comprises the step of adding a naphthalene water reducing agent, wherein the mass ratio of the quick lime to the fluorgypsum is (0.5-1.0) : 100, the mass ratio of the naphthalene water reducing agent to the fluorgypsum is (0.3-0.9) : 100, and the mixing and grinding time is 15-45 minutes. Aimed at the problems caused by the direct use of fluorgypsum as a cementing material, the present invention provides a method for modifying the fluorgypsum with the quick lime and the naphthalene water reducing agent; and the cost is low, implementation is easy, the method is suitable for industrial production, and the raw materials used are singular and the types thereof are few.
Disclosed in the present application is an elevation information-fused processing method for remote sensing images. The method comprises: acquiring an image data set, and preprocessing the image data set to obtain an image set; performing SLIC segmentation processing on the image set, and, during the process of the SLIC segmentation processing, introducing elevation information in a weighted manner, and setting a threshold value, so as to obtain a pre-segmentation result; on the basis of the pre-segmentation result, by using a data structure of neighborhood arrays, updating in a timely manner an adjacency relationship between clusters, and establishing a comprehensive similarity criterion incorporating elevation features in a weighted manner; and finally, for ground objects having complex elevations, setting a pre-merging judgment condition according to elevation differences between adjacent clusters, and, according to a judgment result, setting weight coefficients of different values for a comprehensive similarity index to carry out region merging to complete image processing. The present application effectively avoids false segmentation caused by depending on spectral information alone, thus improving the accuracy of remote sensing image segmentation.
G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
G06V 10/762 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using clustering, e.g. of similar faces in social networks
G06T 7/187 - SegmentationEdge detection involving region growingSegmentationEdge detection involving region mergingSegmentationEdge detection involving connected component labelling
21.
KIND OF HIGH IMPERMEABILITY LOW THERMAL CONDUCTIVITY INORGANIC LIGHTWEIGHT FOAM CONCRETE AND PREPARATION METHOD
The invention discloses a high impermeability and low thermal conductivity inorganic lightweight foam concrete and its preparation method, including the following mass fraction of raw materials: 1260˜1540 parts of ordinary silicate cement, 20˜60 parts of nano-silica, 460˜740 parts of fly ash, 360˜440 parts of aggregate, 9˜11 parts of redispersible latex powder, 7.2˜8.8 parts of polypropylene fiber, 27˜33 parts of quick-setting agent, 500 parts of fluorine-free foam, 900˜1100 parts of water. 33 parts, 500 parts of fluorine-free foam, 900˜1100 parts of water. The high impermeability and low thermal conductivity inorganic lightweight foam concrete prepared by the present invention has a simple formulation, good workability, light weight and low thermal conductivity, and is suitable for the construction of thermal insulation system for building exterior walls.
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
Disclosed is a pulsed cavitating jet assisted rock breaking mechanism, comprising: a drill bit (3); and a composite pulse assembly (1) arranged on the drill bit (3), wherein the composite pulse assembly (1) can perform fluid pulsed jet impact and mechanical pulsed impact; and a drill pipe (4) is connected to one side of the drill bit (3), and a pulse generating assembly (5) is arranged in the drill pipe (4) and can actively control whether to generate pulses and control the pulse generating frequency. The impact generated in two ways can improve the effect of rock breaking, and can make pulses controllable, which is beneficial for improving the specificity of the pulses and reducing ineffective pulses.
A deep coal seam slotting and fracturing permeability-enhancing device, comprising a fracturing agent supplying device (1); flow guide pipes (2), which are arranged in a drill hole formed in a deep coal seam and are in communication with an input end of the fracturing agent supplying device (1); and a fracturing and slotting device (3), which is fitted and arranged on the ends of adjacent flow guide pipes (2) and used for connecting the adjacent flow guide pipes (2).
H04L 9/06 - Arrangements for secret or secure communicationsNetwork security protocols the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems
25.
ABRASIVE GAS JET BASED COAL BREAKING, PRESSURE RELIEF AND PERMEABILITY ENHANCEMENT DEVICE FOR SOFT COAL SEAM
Disclosed is an abrasive gas jet based coal breaking, pressure relief and permeability enhancement device for a soft coal seam. The device comprises a jet spraying member (2), wherein the spraying member (2) comprises: a spraying pipe frame (21), which is sleeved on a drill rod (12) in a relatively sliding manner; inner springs (22), which are circumferentially distributed between the spraying pipe frame (21) and the drill rod (12); a vibrating rod assembly (4), which is arranged on the side inside the drill rod (12) that is close to the spraying pipe frame (21), and is in contact with the spraying pipe frame (21) in an abutting manner; and a lateral adjustment jet device (3), which is arranged in the spraying pipe frame (21), and can adjust a spraying mode according to an abrasive gas jet pressure, wherein a negative-pressure discharge pipe (23) is also arranged outside the drill rod (12) in a sleeved manner, and can recycle in a timely manner abrasives sprayed for the first time. An inner wall of a drill hole can achieve the effect of being softened; in addition, the abrasives can be recycled in a timely manner, thereby avoiding a blockage caused by internal accumulation of the abrasives.
A visual coal rock fracture grouting device and a test method. The test device comprises a visual fracture grouting box body, a box body support, a grouting device and a monitoring device; a bottom plate is divided into four equal-sized areas in which rubber cushion blocks having different specifications are respectively provided and are used for simulating different fissure widths and tortuosity, artificial original rock films are attached to the insides, and a grouting hole (17) and a plurality of pressure measuring holes (16) are formed in the center of an upper top plate; the grouting device is composed of an air compressor (2), a grout storage barrel (1), a pneumatic agitator (6), a grout conveying pipe (9), a grouting pipe (10) and an air guide pipe (5); the grouting hole (17) is connected to a grout control valve (7) at the bottom of the grout storage barrel (1) by means of the grout conveying pipe (9); and the air compressor (2) is separately connected to the grout storage barrel (1) and the pneumatic agitator (6). According to the device, the fissure grouting process under different grouting conditions such as different fracture widths, roughness, grouting resistance and porosity of pore channels can be simulated, grouting under different fracture conditions can be simulated at the same time, and the difference in grout diffusion forms can be clearly and visually analyzed and compared by means of the visual box body.
G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
27.
METHOD FOR MANUFACTURING NEW PLANTING STICK FOR PLANT-GROWING HOLE, AND APPLICATION OF NEW PLANTING STICK FOR PLANT-GROWING HOLE IN RE-GREENING OF HIGH AND STEEP ROCK SLOPE
A method for manufacturing a new planting stick for a plant-growing hole, and an application of a new planting stick for a plant-growing hole in the re-greening of a high and steep rock slope. The method for manufacturing a planting stick comprises the following steps: a, preparing a matrix; b, manufacturing a non-woven bag according to the specifications of a plant-growing hole; c, filling the bottom of the non-woven bag with an aggregate layer, filling an upper portion thereof with nutrient soil to a third of the height of the non-woven bag, transplanting Parthenocissus tricuspidata cutting seedlings, with the tips and leaves cut off and roots remaining, into the non-woven bag, and then filling up the non-woven bag with the nutrient soil; and d, performing outdoor cultivation until the main stems of the Parthenocissus tricuspidata put out new buds. The planting stick of the present invention has the characteristics of a good nutrient soil layer structure, effective water retention, high fertilizer efficiency, etc., which are beneficial for improving the resistance of greening plants to slope environmental stress; water can rapidly permeate through the aggregate layer at the bottom; and the new planting stick for a plant-growing hole of the present invention can implement a planting manner in which the matrix and seedlings are integrally implanted into a plant-growing hole in one step, the plant survival rate is high, the construction is simple and rapid, and a rock slope can be rapidly re-greened.
A01G 24/00 - Growth substratesCulture mediaApparatus or methods therefor
A01G 24/10 - Growth substratesCulture mediaApparatus or methods therefor based on or containing inorganic material
A01G 24/28 - Growth substratesCulture mediaApparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
A01G 9/02 - Receptacles, e.g. flower-pots or boxes Glasses for cultivating flowers
A01G 2/10 - Vegetative propagation by means of cuttings
28.
HIGH IMPERMEABILITY AND LOW THERMAL CONDUCTIVITY INORGANIC LIGHTWEIGHT FOAM CONCRETE AND PREPARATION METHOD THEREFOR
A high impermeability and low thermal conductivity inorganic lightweight foam concrete and a preparation method therefor, comprising the following raw materials in parts by mass: 1260-1540 parts of ordinary Portland cement, 20-60 parts of nanosilicon dioxide, 460-740 parts of fly ash, 360-440 parts of aggregate, 9-11 parts of redispersible latex powder, 7.2-8.8 parts of polypropylene fiber, 27-33 parts of accelerating agent, 500 parts of fluoride-free foam, and 900-1100 parts of water. The prepared high impermeability and low thermal conductivity inorganic lightweight foam concrete has a simple formula, good workability, light weight, and low thermal conductivity, and is suitable for the construction of thermal insulation systems of building external walls.
A soft magnetic film iron core is provided, including an insulating substrate and a soft magnet. Multiple layers of hollowing-out grid networks stacked vertically are arranged in the soft magnet, and all grid cavities in the hollowing-out grid networks are filled with insulators, such that the micro-morphology of the film iron core is changed, and the film iron core presents a structure of multilayer staggered grid networks as a whole. The soft magnetic film iron core can be processed by the micro-electro-mechanical system (MEMS) process. The proposed preparation method for the soft magnetic film iron core adopts low-cost standard MEMS processes such as ultraviolet (UV) lithography, electroplating, and wet etching, which can realize standardized mass production of the iron core and reduce the processing cost. A sensor using the soft magnetic film iron core as a sensitive element is provided.
G01R 33/05 - Measuring direction or magnitude of magnetic fields or magnetic flux using the flux-gate principle in thin-film element
C23C 14/16 - Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
C23C 14/35 - Sputtering by application of a magnetic field, e.g. magnetron sputtering
B05D 1/00 - Processes for applying liquids or other fluent materials
C23C 14/20 - Metallic material, boron or silicon on organic substrates
G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
30.
SOFT MAGNETIC THIN FILM IRON CORE, MANUFACTURING METHOD THEREFOR AND SENSOR
Disclosed in the present invention are a soft magnetic thin film iron core, comprising an insulating substrate and a soft magnet. By means of providing in the soft magnet a plurality of layers of hollowed-out grids stacked in the vertical direction, and filling all grid cells of the hollowed-out grids with an insulator, an effect of changing micromorphology of the thin film iron core is achieved and the whole thin film iron core presents a space grid structure, helping to limit the size of a magnetic domain, promoting the uniform saturation of the iron core, and accordingly effectively reducing the saturation magnetic induction intensity and coercive force of the thin film iron core as well as improving the soft magnetic performance thereof. The machining process of the soft magnetic thin film iron core provided by the present invention can be performed by means of an MEMS process. In the manufacturing method for the soft magnetic thin film iron core provided by the present invention, low-cost standard MEMS processes such as ultraviolet lithography, electroplating, wet etching, etc. are used, so as to realize standardized mass production of iron cores and reduce machining costs. The present invention provides a sensor, which takes the soft magnetic thin film iron core as a sensitive element, thus effectively reducing power consumption and improving sensitivity as well as reducing noises to a certain extent.
H01F 1/147 - Alloys characterised by their composition
H01F 1/18 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets with insulating coating
H01F 10/18 - Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
H01F 10/28 - Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers characterised by the composition of the substrate
H01F 41/18 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates by cathode sputtering
31.
ROCK MASS FRACTURE GROUTING TEST METHOD FOR RESEARCHING DIFFERENT GROUTING MATERIALS AND GROUTING PRESSURES
A rock mass fracture grouting test method for researching different grouting materials and grouting pressures, specifically comprising the following steps: (I) designing and assembling a multifunctional rock mass fracture grouting test apparatus, the multifunctional rock mass fracture grouting test apparatus comprising a water injection apparatus, a constant-pressure gas injection apparatus, a grout storage tank (1), a data collection control system (2), and a computer; (II) adding grout into the grout storage tank (1); (III) injecting a gas into the grout storage tank (1) by means of the constant-pressure gas injection apparatus; (IV) injecting the grout into needed grouting equipment; (V) monitoring test data at any time by means of the data collection control system (2), and extracting the test data by means of the computer for research or storage; (VI) changing a grouting pressure, grout raw materials, or the ratio of each material of the grout, and repeating steps (II)-(V); and (VII) cleaning the whole system. According to the grouting test method, correct grouting data can be collected, constant-pressure grouting is achieved, and a test basis is provided for researching the flow rule of grout under a constant pressure.
Provided is a dual-channel fluorescence sensor based on in-situ synthesis of carbon dots on halloysite nanotubes (HNT) and loaded with a lanthanide metal-organic framework, which can implement rapid and simultaneous visual detection of DPA and TC. By using methods for preparing and using a dual-channel visual multicolor fluorescent probe above, the sensor has high stability and sensitivity, and is conducive to quick, accurate and intuitive detection of a biomarker.
Disclosed in the present invention is a mining-induced high-level fractured space grouting repair method, comprising: collecting in a mining area a coal mining interval of roofing breaking and a coal mining thickness; determining the position of a primary key stratum; determining the fracture form of the primary key stratum, delimiting a water guide fissure area, and, by using a horizontal directional drilling mode, carrying out horizontal drilling along a rock stratum above the primary key stratum and along a rock stratum below the primary key stratum; arranging grouting holes in an area where a bed separation has not been formed in a high-level bed separation zone, starting grouting by a ground grouting station, pumping large slurry particles to the high-level bed separation, plugging, by means of grouting pressure, lower bed separation fissures of the primary key stratum and lower fissures of the primary key stratum, pumping fine particles to a fissure-zone bed separation, and, by means of slurry pressure, plugging upper fissures of the primary key stratum; first grouting the bed separation, and, after the bed separation is grouted, continuing the advance of a working face; and repeating the above steps until the mining is finished. The method of the present invention is reliable and highly practical, and can reduce the probability of occurrence and the extent of harm of a water disaster and a gas disaster for coal mining in the mining area.
Disclosed is a distributed coal cutting apparatus for a coal mining working face of a coal mine,comprising a coal mining unit. The coal mining unit comprises a set of coal mining machines and two sets of hydraulic supports, the two sets of hydraulic supports being arranged side by side, the arrangement direction of the two sets of hydraulic supports being parallel to the coal wall of the coal mining working face, and the coal mining machines being connected to one set of the hydraulic supports. In the present invention, multiple sets of coal mining machines simultaneously perform a coal cutting process, changing from single-point cutting to simultaneous multi-point coal cutting. Coal cutting production capacity and efficiency are significantly increased, allowing for the possibility of multiple control modes for multiple sets of coal mining machines, and improving production flexibility and adaptability. Each set of coal mining units comprises a set of coal mining machines and two sets of hydraulic supports. The hydraulic supports are capable of providing support to the top plate of the working face, while the coal mining machine is connected to the hydraulic support in a rotatable manner. This allows for adjustment of a coal mining machine working angle, enabling the coal mining machine to perform coal cutting operations within the range of the adjacent hydraulic supports. If multiple sets of coal mining units are provided, the efficiency of coal mining operations may be improved.
E21D 23/04 - Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of propsMeans for counteracting lateral sliding on inclined floor
35.
Distributed coal cutting device for longwall face of coal mine
A distributed coal cutting device for a Longwall face of a coal mine includes coal cutting units, where each coal cutting unit includes one coal cutting machine and two hydraulic supports, the two hydraulic supports are arranged side by side, the arrangement direction of the two hydraulic supports is parallel to the coal wall of the Longwall face, and the coal cutting machine is connected with one of the hydraulic supports. According to the device, multiple coal cutting machines are used for simultaneously carrying out coal cutting operation, and single-point coal cutting is changed into multiple-point simultaneous coal cutting, so that the coal cutting production capacity and the production efficiency are greatly improved. The multiple coal cutting machines can derive multiple control modes, so that the production flexibility and adaptability are improved.
E21C 29/02 - Propulsion of machines for slitting or completely freeing the mineral from the seam by means on the machine exerting a thrust against fixed supports
E21D 23/00 - Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyors, mining machines or guides therefor
E21D 23/03 - Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyors, mining machines or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
36.
PREPARATION AND DETECTION METHODS FOR DUAL-CHANNEL VISUALIZED MULTICOLOR FLUORESCENT PROBE
A dual-channel visualized multicolor fluorescent probe based on halloysite nanotubes (HNTs) synthesizing in situ carbon quantum dots, and loaded with a lanthanide metal-organic framework, capable of realizing rapid and visualized detection of DPA and TC. Using the described detection method for the dual-channel visualized multicolor fluorescent probe, high stability and sensitivity can be achieved, which helps detect biomarkers quickly, accurately and intuitively.
A visualized test method which is for single fracture grouting seepage and in which width and roughness are variable. The method comprises: (1) designing a visualized test system for simulating a plurality of types of single fracture grouting seepage, which system comprises a water injection device, a constant-pressure gas injection device, a grout tank, a visualized single fracture seepage device, a rotary bearing device, and a computer; (2) adding grout prepared according to requirements into the grout tank; (3) constructing the visualized single fracture seepage device on the rotary bearing device according to test requirements; (4) adjusting an inclination angle of the visualized single fracture seepage device; (5) injecting the grout into the visualized single fracture seepage device to observe and study the migration process of the grout; and (6) cleaning the whole system after completion of the test. The entire process of fracture filling by means of grouting can be observed more intuitively by authentically and accurately simulating the migration and evolution process of the grout in rock fractures, thereby providing a platform for the study of the mechanism of rock fracture sealing by means of grouting.
A method utilizing drilling and gel injection to test the fracture development characteristics of hanging wall and footwall strata, the method comprising the following steps: (1) selecting a suitable drilling position in a downhole tunnel; (2) drilling a small-aperture drill hole; (3) pushing a gel injection drill bit into the drill hole, and causing the front end of the gel injection drill bit to finally stop at a position 2m from the bottom of the drill hole; (4) connecting a gel injection mixing apparatus to a gel injection pipeline and performing a segment-by-segment gel injection operation; (5) resting the gel injection drill bit for 0.5-1 days, and removing same after the silica gel has completely solidified; (6) performing a segment-by-segment coring operation, and sending all of the extracted silica gel rock cores to a laboratory; (7) testing, researching and analyzing the extracted silica gel rock cores. The method is based on scientific principles, convenient to operate and low in cost, allows for accurately quantifying and qualitatively grasping the characteristics of fracture development in a drill hole, can be applied to mines requiring testing of the development characteristics of water diversion fraction zones and footwall failure zones, and is highly worthy of popularization.
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
A squatting bionic device of a human lower-limb joint is provided. In the squatting bionic device, a vertical support plate is provided on the device with a sliding table, which is driven by a first motor to slide up and down in a height direction of the vertical support plate or to be fixed on the vertical support plate. A horizontal fixed shaft is fixed on the sliding table. The middle of the fixed shaft is connected with a femoral shaft through a first universal joint. A lower end of the femoral shaft is fixedly connected with a lower femur simulation block. A wire rope is wound around a rotation shaft of a second motor fixed on a base. One end of the wire rope is fixed on the rotation shaft of the second motor, and the other end thereof extends upwards.
G01L 5/1627 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of strain gauges
A preparation method for an α-type hemihydrate gypsum, comprising the following steps: (1) enabling a desulfurized gypsum suspension and propionic acid to react at 120-140 °C for 3-5 hours; (2) carrying out solid-liquid separation, and carrying out vacuum drying at 40-80 °C to obtain an α-type high-strength hemihydrate gypsum. In the present preparation method for the α-type high-strength hemihydrate gypsum, propionic acid is used as a crystal transfer agent, only three carboxyl groups are contained, the distance between every two adjacent carboxyls is two C atoms, and no complex void groups are contained. Thus, the α-type high-strength gypsum tends to develop in the radial direction, a short-column-shaped α-type high-strength gypsum crystal is obtained, the strength of the α-type high-strength gypsum is improved, and resource utilization of the desulfurized gypsum is facilitated.
A low-throw and low-impact blasting method based on hard rock in a deep vertical shaft, comprising the following steps: (1) arranging and constructing a first ring of cut holes in the center of a shaft of the vertical shaft, and after completing the construction, sealing openings of the cut holes; (2) constructing easer holes; (3) constructing a ring of contour holes outside the outermost easer holes; and (4) installing explosives into the cut holes, the easer holes and the contour holes, and completing full-section single blasting according to the sequence of the cut holes, the easer holes and the contour holes. With the method, the height of upcast flying stone and shock and seismic waves can be effectively reduced, the safety of shaft walls and facilities inside the shaft is protected, the blasting depth is increased, and the construction is accelerated; and large rubber rings are arranged above blast holes to mitigate blasting shock waves.
Disclosed is a deep hole vibration-reduction blasting method based on artificial freezing of weak surrounding rock in a deep shaft. The deep hole vibration-reduction blasting method comprises the following steps: (1) according to design requirements, carrying out artificial freezing construction on bedrock on the periphery of a shaft; (2) increasing the drilling depth of normal shallow hole blasting of the frozen bedrock of the shaft by onefold or more from a maximum of not more than L8 meters; (3) performing drilling by using an FJD-6.7 umbrella drill and six YGZ-70 guide rail-type independent rotary rock drills, and selecting for explosives a T220 rock anti-freeze water-gel explosive and a No.3 water-resistant coal mine nitroglycerin explosive, the specifications of which are respectively e45 mm X 400 mm X 0.8 Kg and 32 mm X 170 mm X 150 g, and employing a 6.0 m long leg wire millisecond delay electric detonator; (4) after forming cutout holes, performing explosive charging according to a normal deep hole blasting design; after forming contour holes, using two continuous segments of detonator to bind a primer and an explosive thereof onto a 2.5 m bamboo piece, wherein the distance between the two segments of explosives is about L1 meters, and the bamboo pieces are tightly attached to the outer side of the shaft and blocked by water stemming; (5) the detonation delay time in the contour holes being shorter than 25 ms; and (6) completing connection of blasting wires by means of large parallel connection, performing hoisting and, after closing a gate valve of a freezing pipeline, blasting with a detonator. According to the method, deep holes are formed during one-time drilling, and explosive charging is split between the contour holes to form contour hole charging structures in order to implement smooth blasting with slight differences in the holes, thereby reducing blasting vibration, effectively guaranteeing the safety of the freezing pipeline and freezing wall; the deep holes being formed by one-time drilling increases the drilling and blasting efficiency, accelerates the construction progress, shortens the construction period, and can improve the equipment mechanization efficiency.
The present application provides a pose estimation-based pedestrian fall action recognition method and device. According to the present application, a multi-scale adjacency matrix is used to realize information aggregation, and residual connection is introduced between upper and lower spatial-temporal combining modules having a same structure; spatial-temporal combined features of a pose in double flows (a key point flow and a bone edge flow) are respectively extracted; and finally the double-flow results are combined to make a fall action determination, so that the influence of a background on a recognition effect is reduced to improve action recognition accuracy, and the computational complexity is reduced.
A mine water hazard monitoring apparatus and method. The apparatus comprises: a plurality of armored electrode chains (100). The plurality of armored electrode chains (100) are respectively embedded along a plurality of different directions of a mine. A plurality of intelligent electrodes (101) are arranged in each armored electrode chain (100) along the length direction of the armored electrode chain (100). The plurality of intelligent electrodes (101) of at least one armored electrode chain (100) are embedded in different monitoring stratums of the mine, and are coupled to the corresponding monitoring stratum. A composite modem (200) is connected to the armored electrode chains (100), and acquires a ground electric field of the armored electrode chains (100) in real time. The composite modem (200) is connected to a reference electrode (400) to acquire a background electric field of the mine. The reference electrode (400) is coupled to any one of the monitoring stratums. A control unit (300) is connected to the composite modem (200), and predicts mine water hazards according to the ground electric field and the background electric field collected by the composite modem (200), such that, by means of the ground electric field and the background electric field, the potential risk and possibility of an underground mine accident or damage are analyzed, and mine water hazard prediction is achieved.
G01V 3/26 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
An interconnected mine water inrush disaster micro-seismic monitoring system, comprising a mine monitoring center and collection subsystems, wherein there are a plurality of collection subsystems, and the plurality of collection subsystems are connected in parallel to the mine monitoring center; the plurality of collection subsystems are correspondingly arranged in a plurality of mines; the collection subsystems each comprise digital collection terminals, a mine collection substation, a communication adapter, a first clock synchronizer, a second clock synchronizer and a third clock synchronizer; the digital collection terminals are electrically connected to the mine collection substation by means of a field bus, and the mine collection substation is in communication connection with the mine monitoring center by means of the communication adapter; the first clock synchronizer is in communication connection with the digital collection terminals, the second clock synchronizer is in communication connection with the mine collection substation, and the third clock synchronizer is in communication connection with the mine monitoring center; and the digital collection terminals are connected in parallel to a plurality of collection sensors of different types, and the collection sensors are located at micro-seismic measurement points of the mines.
G01V 1/40 - SeismologySeismic or acoustic prospecting or detecting specially adapted for well-logging
46.
SHARED DRAINAGE SYSTEM DURING CONSTRUCTION OF PLURALITY OF ADJACENT ULTRA-DEEP SHAFTS, AND DRAINAGE METHOD JOINTLY USED DURING CONSTRUCTION OF PLURALITY OF ADJACENT ULTRA-DEEP SHAFTS
A shared drainage system during the construction of a plurality of adjacent ultra-deep shafts. The drainage system comprises a plurality of first pumps (8), wherein the first pumps (8) are used for respectively pumping water from working faces of ultra-deep shafts; and a water-receiving station (1) is arranged on a wall of one of the ultra-deep shafts, a water storage compartment (4) for storing the water pumped from the working faces of the plurality of adjacent shafts is arranged in the water-receiving station (1), and a second pump (5) for pumping and transferring the water from the water storage compartment (4) to outside the shaft is further arranged in the water-receiving station (1). By means of the above drainage system, the sharing of an intermediate water-receiving station (1) during the construction of a plurality of adjacent ultra-deep shafts can be realized, so as to reduce the investment of an intermediate water-receiving station drainage apparatus and the engineering workload of chamber excavation of the water-receiving stations that are configured when other adjacent shafts perform drainage, and shorten the construction period of a mine; and the maintenance personnel and cost for the drainage system of the intermediate water-receiving station are reduced, and the apparatus investment and personnel investment of a plurality of water-receiving stations are reduced.
A test device for increasing production of coalbed methane by reducing nanobubbles on a coal surface. The test device comprises: a box body (1) internally provided with a fermentation chamber for accommodating coal and bacterial liquid, so as to make the coal and the bacterial liquid ferment in the fermentation chamber; a pressure regulating mechanism acting on the fermentation chamber and used for regulating the pressure inside the fermentation chamber, so as to make nanobubbles generated on a coal surface expand and burst under the action of negative pressure; and a bubble monitoring module (4) arranged directly opposite the fermentation chamber and used for monitoring a dynamic state of the nanobubbles on the coal surface in real time. According to the device, negative pressure is generated during the process of coal biological fermentation, the expansion and bursting of nanobubbles on the coal surface under the action of negative pressure is prompted, the nanobubbles are observed in real time, and the processes of nucleation, growth, coalescence and bursting of the nanobubbles are dynamically analyzed, so as to evaluate the effects of coal biological gas production.
C12M 1/36 - Apparatus for enzymology or microbiology including condition or time responsive control, e.g. automatically controlled fermentors
C12M 1/34 - Measuring or testing with condition measuring or sensing means, e.g. colony counters
C12M 1/12 - Apparatus for enzymology or microbiology with sterilisation, filtration, or dialysis means
C12M 1/04 - Apparatus for enzymology or microbiology with gas introduction means
C12M 1/02 - Apparatus for enzymology or microbiology with agitation meansApparatus for enzymology or microbiology with heat exchange means
C12M 1/00 - Apparatus for enzymology or microbiology
C09K 8/582 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of bacteria
The present invention relates to the technical field of fire extinguishing agents for extinguishing coal fires, and relates in particular to a ternary system foam fire extinguishing agent, comprising 3% by mass percentage of hydrocarbon/organosilicon/low-carbon alcohol ternary system foam stock solution, the balance being deionised water; the hydrocarbon/organosilicon/low-carbon alcohol ternary system foam stock solution comprises by mass percentage 3.33% of a hydrocarbon surfactant, 0.033-3.33% of organosilicon surfactant, 0.033-3.33% of low-carbon alcohol, 11% of co-solvent, 5-8% of flame retardant, and 10% of anti-freezing agent, and is supplemented with deionised water to 100%. The present invention solves the defects of the short foam half-life and rapid liquid precipitation and aggregation of conventional foam fire extinguishing agents; the carbon hydrogen/organosilicon/low-carbon alcohol ternary system foam in the present invention has good liquid holding capacity, and the half-life thereof is far longer than conventional foams, thus having a good fire extinguishing effect on spontaneous combustion coal fires.
A62D 1/04 - Fire-extinguishing compositionsUse of chemical substances in extinguishing fires containing or yielding a gas phase, e.g. foams characterised by the foam stabiliser
49.
SHEAR-RESISTANT ANCHOR CABLE SUPPORT STRUCTURE USED FOR LARGE-DEFORMATION ROADWAY AND SUPPORT METHOD
A shear-resistant anchor cable support structure used for a large-deformation roadway, said structure comprising a combined bend-resistant steel beam, open shear-resistant protective tube assemblies and a dense anchor cable. The combined bend-resistant steel beam comprises a first steel section (1) and second steel sections (2), the second steel sections being snapped into the first steel section. The open shear-resistant protective tube assemblies each comprise a backing plate (5) and a circular protective tube (6). The dense anchor cable comprises anchor cables (7) and an anchor cable lock (8), the front end of each anchor cable is inserted into a borehole in surrounding rock and being anchored by using a resin anchor, the tail end of each anchor cable sequentially penetrates through an open shear-resistant protective tube assembly and a second steel section, and the open shear-resistant protective tube assembly is pressed into the borehole in the surrounding rock and is then locked and positioned by using the anchor cable lock. The present support structure can improve the shear strength of an anchor cable body, and prevent direct shearing of the anchor cable due to the displacement of a steel beam or a rock formation. Also disclosed is a support method for a shear-resistant anchor cable support structure used for a large-deformation roadway.
The present invention relates to a strengthening method for a recycled aggregate using biological deposition, comprising the following steps: (1) filling and soaking: in a vacuum environment, soaking a recycled aggregate in a bacterial solution, then taking out the recycled aggregate from the bacterial solution, soaking in a mineralized culture solution, taking out the recycled aggregate after the soaking is finished, and cleaning and drying; (2) repairing and soaking: taking out the recycled aggregate treated in step (1), cleaning and drying, then soaking in a mixed culture solution of the bacterial solution and the mineralized culture solution; wherein the bacterial solution contains bacillus. In the present invention, the strengthening method for a recycled aggregate using biological deposition can better target areas needing to be repaired of the recycled aggregate, thereby obtaining a better repairing effect, and a bacterial powder produced by industrial production is used to greatly reduce process costs, so that the microbial mineralization deposition (MICP) technology has a wider application range.
A static blasting agent based on sulfoaluminate cement and lime, and a preparation method therefor. The static blasting agent comprises a sulfoaluminate cement clinker, quick lime, gypsum, a composite admixture and water, wherein the composite admixture comprises a water reducing agent, aluminum sulfate and sodium gluconate, and the quick lime is quick lime obtained by means of normalizing calcination. The preparation method for the static blasting agent comprises: (1) adding a water reducing agent, aluminum sulfate and sodium gluconate to a mixer in proportion and mixing same until uniform to obtain a composite admixture; (2) adding a sulfoaluminate cement clinker, quick lime, gypsum and the composite admixture to the mixer in proportion and mixing same until uniform to obtain a mixture; and (3) adding water to the mixture in proportion and stirring same in a stirrer until uniform. The static blasting agent based on sulfoaluminate cement and lime can shorten the starting time of expansion and avoid the phenomenon of jetting at a drillhole.
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
52.
SELF-DRILLING INJECTION ANCHOR PIPE-BASED ANCHORING DEVICE FOR COAL MINE, AND METHOD
A self-drilling injection anchor pipe-based anchoring device for a coal mine, and a method. The device comprises an anchor pipe (2), a single-use drill bit (1), a support plate (3), a nut (4), an anchoring agent A material grouting assembly, an anchoring agent B material grouting assembly, and a slurry mixing tee joint (7); the single-use drill bit (1) is coaxially installed on the front end of the anchor pipe (2); the single-use drill bit (1) and the anchor pipe (2) are inserted into a drilled hole; the rear end of the anchor pipe (2) extends out of the drilled hole; the support plate (3) is sleeved on the anchor pipe (2); the nut (4) is threadedly connected to the rear end of the anchor pipe (2); the rear end of the nut (4) presses against the front end of the support plate (3); the single-use drill bit (1) and the anchor pipe (2) are internally provided with a grouting center channel (8) that runs through the front and rear ends; the slurry mixing tee joint (7) has an outlet end connected to the rear port of the anchor pipe (2), and two inlet ends respectively connected to the outlet ports of the anchoring agent A material grouting assembly and the anchoring agent B material grouting assembly. According to the device and method, the process is simple, the operation is flexible, the construction efficiency is high, drilling using a drill pipe and exiting of the drill pipe are omitted, delivery of the anchoring agents is facilitated, resin rings formed after the anchoring agents are injected have uniform thicknesses, and the anchoring effect is good.
The present invention provides a high temperature metal and alloy vacuum vertical continuous casting machine, said continuous casting machine comprising a vacuum apparatus, a smelting apparatus, a temperature preservation apparatus, a crystallization forming apparatus and a pulling apparatus. The vacuum apparatus comprises a furnace body and an upper cover body, and an air exhaust valve and an air inlet valve are arranged on the furnace body. The smelting apparatus comprises a crucible, the crucible is arranged within the furnace body, a heating coil is arranged at the periphery of the crucible, a stirring motor is arranged on the upper cover body, an output shaft of the stirring motor is connected to a stirring rod, a lower end portion of the stirring rod is connected to a stirrer, and a lower portion of the crucible is provided with a material outlet. The crystallization forming apparatus comprises a crystallizer, a cooler and a heater, the crystallizer is arranged on the peripheral direction of the material outlet at the lower portion of the crucible, the cooler is arranged at the periphery of the crystallizer, and the heater is arranged at the periphery of the cooler. The pulling apparatus comprises pulling wheels, and the pulling wheels are arranged in pairs.
An extendable adaptive tunneling support apparatus for rock stratum control in coal mining, comprising a moving base (1), a force equalizing cylinder (4), a motor base (5), a hydraulic telescopic rod (8), and a top support assembly (11). A hydraulic height adjusting device (3) is positioned and mounted at the top of the moving base by using a positioning base (2); the force equalizing cylinder is fixed to an output end of the hydraulic height adjusting device in an attachment manner; the motor base is fixed above the force equalizing cylinder in an attachment manner; an auxiliary positioning assembly is fixed on the motor base; a positioning end of the auxiliary positioning assembly is hingedly connected to a position of the hydraulic telescopic rod close to an end portion; one end of the hydraulic telescopic rod is hingedly connected to the motor base, and the other end is hingedly connected to the middle of the bottom of an extendable arm (10); one end of the extendable arm is hingedly connected to the top support assembly; a support arm (12) is fixed at the bottom of the top support assembly; the other end of the support arm is fixed above the auxiliary positioning assembly; and the top support assembly can control a top rock stratum while supporting a roof.
Disclosed are a shallow-buried leakage-proof pipeline and a method for operating the same. The leakage-proof pipeline includes a programmable logic controller (PLC), an outer pipe, an inner pipe, a first water-pressure sensor, a second water-pressure sensor, an electromagnetic valve, and a movable water leakage detection device. The PLC is arranged on the ground. The outer pipe and the inner pipe are both shallowly buried along a horizontal direction, and the inner pipe is coaxially arranged in the outer pipe. The first water-pressure sensor and the electromagnetic valve are both arranged at a water inlet of the inner pipe, and the second water-pressure sensor is arranged at a water outlet of the inner pipe. The movable water leakage detection device is arranged at a bottom of the outer pipe.
G01M 3/18 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for valves
F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
56.
MULTI-TEMPORAL AND MULTI-LEVEL URBAN TEMPERATURE REMOTE SENSING DATA ANALYSIS METHOD
Disclosed is a multi-temporal and multi-level urban temperature remote sensing data analysis method, comprising four steps of acquisition of temperature remote sensing data, preliminary analysis of the data, analysis of multi-level connectivity, and analysis of attribute statistics. Compared with traditional urban temperature measurement and analysis method, the present invention, on one hand, effectively achieves comprehensive analysis of the correspondence between main ground feature indexes and improves the comprehensiveness and precision of analysis work, and on the other hand, overcomes the defects of large data calculation amount, poor calculation process normalization, and poor calculation data comprehensiveness in traditional similar work, thereby greatly improving the working efficiency, quality, and precision of urban temperature remote sensing observation data analysis work. The present invention can be widely applied in various urban planning work, so as to provide accurate work reference data and basis for urban planning work, thereby improving the work efficiency and rationality of urban planning work, and reducing the labor intensity and cost of urban planning work.
An intelligent control movable mechanical arm, comprising a base (1), an electric raising/lowering rod (2), a first motor (10), a mechanical claw (12), and a second motor (17). The electric raising/lowering rod (2) is fixedly mounted on the outer side wall of the base (1), a support plate (3) is fixedly connected to the tail end of the electric raising/lowering rod (2), a fixed box (4) is fixedly connected to the outer side wall of the support plate (3), a lubrication box (5) is fixedly mounted on the inner side wall of the fixed box (4), a partition plate (23) is fixedly connected to the inner side wall of the lubrication box (5), a lubrication mechanism is slidably connected to the inner side wall of the lubrication box (5), a support rod (6) is fixedly connected to the outer side wall of the fixed box (4), a connection box (7) is fixedly connected to the tail end of the support rod (6), and a placement plate (15) pulls a string (32) to move downwards, so that a cleaning pipe (28) is opened, a gas compressed inside a cleaning box (26) is sprayed to the surface of the mechanical claw (12) through the cleaning pipe (28) to clean dust and impurities on the surface of the mechanical claw (12), manual cleaning is not needed, and a large amount of manpower and time are saved.
B25J 19/00 - Accessories fitted to manipulators, e.g. for monitoring, for viewingSafety devices combined with or specially adapted for use in connection with manipulators
58.
FIBER GRATING INTELLIGENT COAL-ROCK IDENTIFICATION DEVICE FOR SHEARER DRUM
Disclosed is a fiber grating intelligent coal-rock identification device for a shearer drum. The fiber grating intelligent coal-rock identification device comprises the shearer drum; a fiber grating acceleration sensor is fixedly provided on the shearer drum, the fiber grating acceleration sensor is electrically connected to a fiber grating demodulator, the fiber grating demodulator is electrically connected to a computer, the computer is electrically connected to a signal receiver, and the signal receiver is connected to an oil pump motor for controlling the drum to move. According to the present invention, vibration signals can be effectively transmitted to a computer data processing system in time, and a curve graph is generated; real-time monitoring is achieved, the precision is high, interference of the severe environment of a coal face is avoided, stable real-time data is provided for a shearer lifting control system, deployment and maintenance are easy, and cost is low.
A squatting human lower limbs joint biomimetic device. A vertical supporting plate (23) is provided with a sliding platform (4) driven by a first motor (1) and sliding up and down or fixed in the height direction of the vertical supporting plate (23), a horizontal fixing shaft (41) is fixed on the sliding platform (4), a femoral shaft (7) is connected to the middle part of the fixing shaft (41) by means of a first universal joint, a femoral lower end simulation block (8) is fixedly connected to the lower end of the femoral shaft (7), a steel wire rope (6) is wound around a rotating shaft of a second motor (19) fixed on a base (18), one end of the steel wire rope (6) is fixed on the rotating shaft of the second motor (19), and the other end extends upwards, passes a fixed pulley set (5) fixed on the sliding platform (4)and then is connected to the upper end of a patellar ligament simulation strap (11). An applied squatting force is acquired by a tension sensor, a movement trajectory signal during a squat process is acquired by a gyroscope, and forces applied to the knee joint and the sole are acquired by a strain gauge, thereby simulating the movement trajectory and force of the human lower limbs when subjected to a certain force curve and performing squatting movement.
HENAN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
HENAN POLYTECHNIC UNIVERSITY (China)
HENAN YOUKE ELECTRONIC MATERIALS CO. LTD (China)
Inventor
Song, Kexing
Li, Shaolin
Cao, Jun
Zhou, Yanjun
Ding, Yutian
Feng, Cunli
Wu, Baoan
Lv, Changchun
Guo, Xiuhua
Zhang, Yanmin
Zhang, Xuebin
Huang, Tao
Liu, Haitao
Cheng, Chu
Zhang, Chaomin
Peng, Xiaowen
Abstract
The present invention provides an ultrasonic vibration traction compound apparatus used for continuous casting, comprising: a continuous material-feeding apparatus, comprising a first vacuum chamber, a second vacuum chamber, and a third vacuum chamber arranged in sequence from top to bottom; a smelting apparatus, comprising a crucible and a heating coil; a crystallizer apparatus, comprising a crystallizer, the crystallizer being arranged in the second vacuum chamber; an ultrasonic vibration apparatus, the ultrasonic vibration apparatus being arranged on the outside of the crystallizer, the ultrasonic vibration apparatus being used for generating ultrasonic waves and thereby ultrasonically vibrating the crystallizer; a metal-rod cooling apparatus, the metal-rod cooling apparatus being arranged at a metal-rod outlet below the third vacuum chamber and used for cooling metal rods; a traction apparatus, the traction apparatus being connected to the metal rod and capable of pulling the metal rod to move upward and downward. The apparatus can achieve equiaxation and refinement of the organized grains of the metal-rod blanks, which is conducive to the subsequent drawing of the metal rod, and the service life of the crystallizer is long.
A water jet technology-based anchor cable self-drilling and rapid anchoring construction method, comprising the following steps: adjusting an angle-adjustable drilling mechanism so that a hollow anchor cable (1) faces a preset drilling direction; connecting a water jet generation device to the rear end of the hollow anchor cable (1); starting the water jet generation device and the angle-adjustable drilling mechanism to perform a drilling operation; after the drilling operation is completed, coaxially connecting a rigid pipe (4) to the rear end of the hollow anchor cable (1), and mounting the rigid pipe (4) onto the angle-adjustable drilling mechanism; connecting a discharge port of an anchoring agent feeding device to the rear end of the rigid pipe (4); and starting the anchoring agent feeding device and the angle-adjustable drilling mechanism to perform an anchoring operation on the hollow anchor cable (1) in a drilled hole.
An apparatus for continuous-mask electrolysis processing of a metal microstructure, comprising a liquid spray nozzle, an electrolysis power supply, a workpiece anode, a workpiece cathode, a gas spray nozzle, a mask strip, a strip storage wheel, a strip take-up wheel, a drive source, carrier rollers, and a tensioning wheel. Under the collective action of the strip take-up wheel, the tensioning wheel, and the strip storage wheel, the mask strip, which is provided with a pierced pattern or contains exudation micropores, is tightly pressed against the surface of the workpiece cathode and forms an enveloping corner, and is further tightly pressed against a surface to be processed of the workpiece anode, which is able to rotate or able to move. The tape take-up wheel continuously recovers the mask strip and drives the workpiece anode and the workpiece cathode to move synchronously at a constant speed. The liquid spray nozzle sprays an electrolyte at a high speed, and under the comprehensive action of an electric field and a flow field, workpiece anodes successively undergo uniform localized electrochemical dissolution, until the completion of workpiece processing. The apparatus for continuous-mask electrolysis processing of a metal microstructure of the present invention is able to improve process adaptability and stability in active mask electrolysis processing, thereby obtaining a metal micro-nano structure having high precision and high surface quality.
The present invention provides a biomass conversion system based on gasification, comprising: a baking furnace, a gas-solid separation device, a gasification furnace, and a combustion furnace, wherein the baking furnace is communicated with external waste heat flue gas and the gas-solid separation device, the gas-solid separation device is further communicated with the combustion furnace and the gasification furnace, and the combustion furnace is further communicated with the outside. The present invention further provides a biomass conversion method based on gasification, comprising the steps that: the baking furnace bakes a biomass raw material by using waste heat flue gas; gas and a solid generated by baking are separated by the gas-solid separation device; a gas product obtained by separation is conveyed to the combustion furnace, and the obtained solid is conveyed to the gasification furnace; and the gasification furnace gasifies and decomposes the solid under the action of high-temperature flue gas, a generated volatile component is conveyed to the combustion furnace, and generated gasified coke serves as a final product. The biomass conversion system and method based on gasification of the present invention have the characteristics such as low energy consumption, low costs, high cleanliness, better product quality, and can be widely applied to the field of biomass conversion.
C10J 3/00 - Production of gases containing carbon monoxide and hydrogen, e.g. synthesis gas or town gas, from solid carbonaceous materials by partial oxidation processes involving oxygen or steam
The disclosure relates to a vertical Hopkinson pressure bar test device and a test method. The device comprises a guide cylinder, an incident bar, a transmission bar, a buffer bar and a striker, and further comprises a base; side support plates arranged vertically and upwards are provided symmetrically on two sides of the base, a horizontal first lateral support plate is provided at the top between the side support plates on the two sides, three groups of horizontal second lateral support plates are provided below the first lateral support plate sequentially between the side support plates on the two sides, and each group is provided with a clamping mechanism clamping a corresponding incident bar, transmission bar or buffer bar; the surfaces of the incident bar is pasted with a first strain gauge pad and the transmission bar is pasted with a second strain gauge pad. According to the disclosure, the striking velocity is accurately controlled to render a medium or low velocity for analyzing the dynamic mechanical properties of low-wave impedance materials such as coal and light concrete, satisfying the requirements of dynamic tests on high, medium and low velocities.
G01N 3/303 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force generated only by free-falling weight
G01N 3/06 - Special adaptations of indicating or recording means
A roadway roof-falling hazard automatic detection device, comprising a robot main body (1), wherein the inside of the torso of the robot main body (1) is provided with a power source (2), a control system (3), a storage system (4), an automatic grading system (5) and a signal receiver (6); two feet of the robot main body (1) are crawler-type travelling systems (7); high-definition cameras (8) are respectively arranged at both eyes on the head of the robot main body (1); ultrasonic generators (9) are respectively arranged at both ears on the head of the robot main body (1); and identifier spraying systems (19) are respectively provided inside two upper arms of the robot main body (1), and the colour of paint sprayed by the two identifier spraying systems (19) is different. The roadway roof-falling hazard automatic detection device realises unmanned roadway inspection, and remote manipulation can realize roadway inspection without the need to drill a hole for mounting an instrument and to spend time waiting for a test result, thereby simplifying a test procedure, reducing a test time, improving a test area and test precision, ensuring the reliability of a test result, and saving on labour, material resources and financial resources.
CHONGQING MATERIALS RESEARCH INSTITUTE CO., LTD (China)
Inventor
Cao, Jun
Wu, Baoan
Ming, Pingmei
Wu, Xuefeng
Zhang, Xinmin
Tang, Huiyi
Zhang, Yuemin
Jia, Zhihong
Abstract
The present invention provides a copper alloy wire for a connector and a method for manufacture thereof; vacuum casting is used for the copper alloy wire of the present invention to achieve precise control of the alloy composition and structure; by means of homogenization heat treatment and hot extrusion processing, a high-performance copper alloy material having good consistency and a dense structure is obtained; stabilizing the structure by means of solid solution treatment, further improving the mechanical properties of the alloy material; finally, obtaining a copper alloy wire having high strength, high conductivity, good high temperature stability, good wear resistance, and good processing performance.
B21C 37/04 - Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided forManufacture of tubes of special shape of rods or wire
C22F 1/08 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
C22F 1/02 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
69.
SMART FIBER GRATING-BASED LEVEL MONITORING DEVICE FOR COAL BUNKER, AND MONITORING METHOD
A smart fiber grating-based level monitoring device for a coal bunker and a monitoring method. The device comprises a support device located above a coal bunker (23), and the support device is detachably connected to a vibration device. The vibration device extends into the coal bunker (23). A surrounding preconfigured recess (7) is machined on a housing of the vibration device. The preconfigured recess (7) is used to place a fiber grating sensor device (14). The fiber grating sensor device (14) is connected to a fiber grating demodulator (13), and the fiber grating demodulator (13) is electrically connected to a data processing system (21). The data processing system (21) is electrically connected to an alarm device (15). The alarm device (15) is connected to a tape conveyance machine (24). The optical wave reflection change of a fiber grating is fast, has superior precision, and enables a signal to be immediately transmitted to a display device, improving the operation environment of the coal bunker (23). The invention is unaffected by the harsh conditions of the coal bunker (23), and achieves stable, real-time coal level monitoring, thereby detecting coal caking in a timely manner, and enabling coal caking to be resolved. The invention is also easy to deploy and maintain, and has a low cost.
G01F 23/14 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
70.
DEVICE USING FIBER GRATING TO MONITOR COAL MINE DYNAMIC DISASTER
A device using a fiber grating to monitor a coal mine dynamic disaster comprises: a data acquisition device, used to acquire a shock wave signal in a coal mine, the shock wave signal reflecting a current possibility of coal and gas outbursts; a data processing device, used to process acquired data, eliminate an interfering signal, convert a valid signal into a measured physical quantity, and transmit the data to a display unit or perform storage; a real-time processor, used to acquire and process data in real time; the display unit, used to acquire, store, display, and query historical data, and display a remaining electricity amount; and a power supply apparatus, used to supply power to the entire monitoring device. The device performs real-time online monitoring on a coal mine, thereby greatly reducing dynamic disasters.
A novel shallow-buried underground leakage-proof pipeline and a working method thereof. The novel shallow-buried underground leakage-proof pipeline comprises a PLC, an outer pipe (1), an inner pipe (2), a water inlet water pressure sensor (3), a water outlet water pressure sensor (4), an electromagnetic valve (5) and a movable water leakage detection device, wherein the PLC is arranged on the ground, both the outer pipe (1) and the inner pipe (2) are buried underground in a shallow manner in the horizontal direction, the inner pipe (2) is coaxially arranged inside the outer pipe (1), the water inlet water pressure sensor (3) and the electromagnetic valve (5) are arranged at a water inlet of the inner pipe (2), the water outlet water pressure sensor (4) is arranged at a water outlet of the inner pipe (2), and the movable water leakage detection device is arranged at the bottom of the outer pipe. The leakage-proof pipeline uses a differential pressure-humidity detection method to realize leakage stopping and leakage point detection when a shallow-buried underground pipeline leaks, such that leakage stopping and leakage checking during liquid conveying are realized, liquid loss when the underground shallow-buried pipeline leaks is reduced, later repair of a leakage point, replacement of a related pipeline and the like are facilitated, more resources are saved, and the service life of the pipeline is prolonged.
The present invention relates to the technical field of building materials, and specifically relates to a composite reinforced gypsum material; the composite reinforced gypsum material is prepared from raw materials comprising calcium–aluminum minerals, nano boehmite, building gypsum, and retarder. The use of calcium–aluminum minerals and nano boehmite to modify the gypsum material improves its mechanical properties and its microscopic pore structure, such that the compressive strength of the gypsum material is increased by 20%–117%. The invention also relates to a method for preparing a composite reinforced gypsum material.
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
C04B 111/27 - Water resistance, i.e. waterproof or water-repellent materials
73.
Portable multi-azimuth ultrasonic-assisted vibration rolling device and application method thereof
The present invention discloses a portable multi-azimuth ultrasonic-assisted vibration rolling device and an application method thereof. The vibration rolling device includes an ultrasonic rolling unit, a hydraulic power unit, a pneumatic cooling unit, a main body frame and an indexing device; an amplitude transformer assembly at the ultrasonic rolling unit comes into rolling contact with the surface of a tooth space of a gear workpiece, the hydraulic power unit is articulated with the main body frame, and the hydraulic power unit is articulated with the horn assembly, the indexing device is provided at the main body frame, and the gear workpiece is mounted at the indexing device. The present invention has the advantages that the device is flexible and portable, enables a transducer to be cooled continuously, and facilitates fixation of a rolling steel ball and adjustment of a station of the gear workpiece.
C21D 9/32 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for gear wheels, worm wheels, or the like
C22F 1/18 - High-melting or refractory metals or alloys based thereon
C21D 7/04 - Modifying the physical properties of iron or steel by deformation by cold working of the surface
A power plant exhaust steam regenerative system, comprising: a first tank, a second tank, a condenser (8), an exhaust steam nozzle group (20), a first absorption solution (41), a first evaporator (18), a first circulating solution nozzle group (19), a solution heat exchanger (33), a second evaporating solution (13), a second circulating solution nozzle group (14), a second evaporator (15), a third evaporator (23), and a regenerative heat exchanger (29). The exhaust steam nozzle group (20), the first circulating solution nozzle group (19), the first evaporator (18), and the first absorption solution (41) are installed in the first tank; and the second circulating solution nozzle group (14), the second evaporator (15), the third evaporator (23), and the second evaporating solution (13) are installed in the second tank. The described power plant exhaust steam regenerative system has the characteristics of being low-cost, having a simple structure, having high thermal efficiency and so on, and may be widely applied in the field of regenerative heat utilization.
The present invention discloses an anchoring apparatus and an operation method thereof. The anchoring apparatus includes: a movable framework (1); a folding-type working platform (2) that includes a working platform frame (203), a longitudinal guide (204), a transverse guide (205) and a central turntable (206), the longitudinal guide (204) being movable along the transverse guide (205), and the central turntable (206) driving the longitudinal guide (204) and the transverse guide (205) to rotate relative to the working platform frame (203); a drilling machine (3); a workpiece supply system (4); and a power control system (5) that drives the movable framework (1) to move. With the anchoring apparatus, the mechanical and automatic anchoring with anchor bolts and anchor cables can be implemented in anchoring, the labor intensity in anchoring can be greatly reduced, the efficiency of anchoring can be improved, and the safety in the entire process can be enhanced.
A relative sliding-less superfine metal or alloy wire drawing apparatus, comprising: a wire releasing system (1), the wire releasing system comprising a wire releasing wheel, a guide wheel (13), a first wire guiding wheel (14) and a speed regulating apparatus which are arranged sequentially, the speed regulating apparatus being used for controlling the wire releasing speed of the wire releasing system; a wire drawing system (2), the wire drawing system being connected to the wire releasing system, the wire drawing system comprising a heat treatment wheel (21) and a plurality of sequentially connected wire drawing units, speed regulating apparatuses also being arranged in the wire drawing units; a wire receiving system (3), the wire receiving system being connected to the wire drawing system, the wire receiving system comprising a wire receiving wheel, used for recovering drawn wire. The speed of wire drawing wheels (28) in the wire drawing units of the apparatus is adjustable, and there is no relative sliding between any wire drawing wheels. The present invention implements sliding-less drawing of superfine metal or alloy wire, eliminates wire surface defects, and has a low wire drawing die proportioning ratio accuracy, high wire drawing device versatility and low maintenance costs.
B21C 1/08 - Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums with two or more dies operating in series in which the material does not slip on the drums
B21C 1/12 - Regulating or controlling speed of drawing drums, e.g. to influence tensionDrivesStop or relief mechanisms
B21C 9/00 - Cooling, heating or lubricating drawing material
77.
PORTABLE, MULTI-DIRECTIONAL, ULTRASOUND-ASSISTED VIBRATION ROLLING DEVICE, AND USE METHOD THEREOF
Disclosed is a portable, multi-directional, ultrasound-assisted vibration rolling device, comprising an ultrasonic rolling unit, a hydraulic power unit, a pneumatic cooling unit, a main frame, and an indexing device. The ultrasonic rolling unit comprises an ultrasound power source and an amplitude transformer assembly, wherein the ultrasound power source is connected to the amplitude transformer assembly. The hydraulic power unit comprises a hydraulic station, an oil distributor valve, a force-application oil cylinder and an angle-adjustment oil cylinder, wherein the oil distributor valve is installed on the hydraulic station and is respectively connected, via oil passages, to the force-application oil cylinder and the angle-adjustment oil cylinder. The bottom of the force-application oil cylinder and the bottom of the angle-adjustment oil cylinder are hingedly connected to the main frame. An outer end of a piston rod of the force-application oil cylinder and an outer end of a piston rod of the angle-adjustment oil cylinder are hingedly connected to the amplitude transformer assembly. The indexing device is disposed on the main frame under the amplitude transformer assembly, and configured with a gear member, wherein the amplitude transformer assembly is in rolling contact with a tooth space surface of the gear member. The vibration rolling device of the present invention is flexible and convenient to use, permits continual cooling of an energy converter, and facilitates fixing of steel rolling balls and convenient adjustment of a work position of the gear member.
An anchor rod includes a sleeve open at one end and having a blocking plate at the other end; a pressure relief pipe fixedly arranged on an inner wall of the sleeve; and a rod body. A guide hole is formed in a center of the blocking plate. A part of the rod body penetrates through the guide hole and extends into the sleeve. A gap is formed between the pressure relief pipe and the blocking plate. An overflow valve is connected to the pressure relief pipe. A piston in sliding seal fit with the sleeve and the pressure relief pipe is arranged at the rod body. A sealing ring in sliding seal fit with the rod body is arranged at the inner wall of the guide hole; and a sealing cavity between the blocking plate and the piston in the sleeve is filled with emulsion.
The present invention relates to a high-speed railway goaf foundation pseudo-dynamic loading model test apparatus and method. The apparatus comprises a test platform provided with a model recess. Two sides of the model recess are wall plates. One side of each wall plate is close to the test platform, and the other side is provided with multiple slots. A test rock and soil body is placed in the model recess. A goaf simulation assembly is provided inside the test rock and soil body. Two sides of the test rock and soil body are baffles inserted into the slots. A loading base is provided on the test rock and soil body. A loading plate is tiled on the loading base. A rail pad is provided on the loading plate. Two parallel loading rails are fixed on the rail pad. A reaction stand is provided on the test platform. The reaction frame is provided with a downward loading device. A rigid beam is connected to the bottom of the loading device. According to the present invention, the baffles can be inserted into the slots so that the positions of the baffles are fixed and a horizontal reaction force is provided, and the positions of the baffles can be adjusted according to the positions of the slots, and the model recess can accommodate test rock and soil bodies of different sizes.
A protection structure for preventing ground heave caused by tunnel grouting reinforcement and a grouting method, relating to the technical field of geotechnical engineering, civil engineering and municipal engineering, and comprising a tunnel body (8) located below a stratum surface (1). A reverse curved arch (5) formed by ground surface grouting is arranged in the stratum directly above the tunnel body (8), and the reverse curved arch (5) is arched downwards; a support structure is arranged on a top slope of the inner contour of the tunnel body (8) and surrounds the top slope of the inner contour of the tunnel body (8); a forward curved arch (11) formed by drilling grouting is arranged on the outer side of the support structure, and the forward curved arch (11) is arched upwards. A stress bearing body is jointly formed by multi-layer multiple grouting and a combination of multiple passive supporting modes, the reverse curved arch (5) and the forward curved arch (11) are formed in sequence, and the stress distribution states of the loose rock stratum, and the sandy soil layer and the like surrounding the tunnel are changed. Therefore, high-pressure grouting can be formed by protection of the reverse curved arch (5) under the condition of being not familiar with the surrounding environment and the rock-soil property.
E21D 11/00 - Lining tunnels, galleries or other underground cavities, e.g. large underground chambersLinings thereforMaking such linings in situ, e.g. by assembling
E02D 3/12 - Consolidating by placing solidifying or pore-filling substances in the soil
81.
SYSTEM AND METHOD FOR REALIZING CONTINUOUS ADDITION OF SAND INTO PRE-MIXED ABRASIVE WATER JET BY HIGH-PRESSURE MORTAR PUMP
Disclosed in the present invention is a system for realizing continuous addition of sand into a pre-mixed abrasive water jet by a high-pressure mortar pump, the system comprising a clear water barrel, a mortar stirring barrel, a high-pressure clear water pipeline, a high-pressure mortar pipeline, a high-pressure jet pipeline, and a tee pipe. The high-pressure clear water pipeline is provided with a high-pressure clear water pump and a first pressure gauge sequentially in a water flow direction; the high-pressure mortar pipeline is provided with a high-pressure mortar pump, a second pressure gauge and an adjusting ball valve sequentially in a mortar flow direction; and an outlet of the high-pressure jet pipeline is connected to a high-pressure spray nozzle. Further disclosed in the present invention is a method for realizing continuous addition of sand into a pre-mixed abrasive water jet by the high-pressure mortar pump. According to the present invention, the characteristic of the high-pressure mortar pump being able to carry small particles of abrasive sand is ingeniously utilized, an existing way of mixing water and sand in a high-pressure state is changed into a way of mixing the water and the sand into high-concentration mortar in a normal-pressure state, and then mixing the high-concentration mortar with high-pressure clear water to form the high-pressure abrasive water jet with an appropriate concentration, which has the advantages of convenience, continuous sand addition, and convenience in operation.
B24C 1/04 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
B24C 7/00 - Equipment for feeding abrasive materialControlling the flowability, constitution, or other physical characteristics of abrasive blasts
The present invention discloses a liquid injection type reamer bit, which comprises a drilling and reaming rod (1), a drilling tool (2) and reaming tools (3). The reamer bit is adopted to perform drilling and reaming operations respectively in a water pressure adjusting manner, has the advantages of simple structure, convenient operation, small volume, light weight, flexible and reliable technology, unified power sources for drilling and reaming, stable reaming, easy recovery of tools, and realization of reaming while drilling, greatly improves the anchoring reliability of anchor bolts, and ensures the safety of workers during underground work.
E21B 10/32 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A vertical Hopkinson pressure bar testing apparatus and a testing method, comprising a guiding cylinder (6), incident rods (7), transmission rods (8), cushioning rods (9), and a bullet (21). The vertical Hopkinson pressure bar testing apparatus also comprises a base (5). Symmetrically provided on either side of the base (5) are lateral support plates (17) in an vertically upward arrangement. A first transverse support plate (30) is provided at the top between the lateral support plates (17) of either side. Below the first transverse support plate (30), three horizontal second transverse support plates (19) are sequentially mounted between the lateral support plates (17) of either side. Each second horizontal support plate (19) is provided with a clamping mechanism. Each clamping mechanism clamps the corresponding incident rod (7), transmission rod (8), or cushioning rod (9). A first strain gauge (36a) is glued to the surface of the incident rods (7). A second strain gauge (36b) is glued to the surface of the transmission rods (8). This allows the impact speed of the bullet to be controlled precisely and a medium-to-low impact speed to be acquired, is for use in analyzing dynamic mechanical properties of lower-wave impedance materials such as coal and lightweight concrete, and satisfies dynamic tests of high, medium, and low speeds.
G01N 3/313 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force generated by explosives
84.
Quick quantitative analysis method and analyzer for mixture based on spectral information
The present invention relates to a quick quantitative analysis method and analyzer for mixture concentration information. A quick quantitative analysis method for a mixture based on spectral information includes: collecting a sample of a mixture solution, and injecting into a DAD to obtain DAD data; then, calculating a spectral library by a quick qualitative analysis method based on a vector error algorithm to obtain a spectral error vector; determining a spectral curve of a component included in the data corresponding to the sample, according to a value of the error vector; and calculating a content flag value of each component in the sample and concentration information of each substance.
An anchoring device and a working method thereof, relating to the field of mining devices. The device comprises a mobile chassis (1), a foldable working platform (2), a drilling rig (3), a material filling system (4), and a power control system (5). The mobile chassis (1) is a gantry frame structure and can drive the entire device to move; the foldable working platform (2) can be folded over with respect to the mobile chassis (1); the drilling rig (3) is disposed on the foldable working platform (2); the material filling system (4) can supply the drilling rig (3) with various required materials; the drilling rig (3) can drill holes, provide anchoring agents, install anchor rods, and install anchor cables at particular positions; and the power control system (5) provides necessary power for the entire device and controls various actions. The anchoring device can achieve mechanization and automatic installation of anchor rods and anchor cables, thereby greatly saving the labor power in anchoring, improving the efficiency of anchoring, and increasing the safety of the entire process.
A hydraulic constant-resistance deformation automatic pressure-relieving anchor bolt used in mining and an operating method thereof, the anchor bolt comprising a sleeve tube (2), a pressure relief tube (9) and a bolt body (4), all disposed along a left-right direction; a left end of the sleeve tube (2) being open and a right end being provided with a blocking plate (10), a guide hole being disposed at a center of the blocking plate (10), a left part of the bolt body (4) penetrating the guide hole and entering the sleeve tube (2), the pressure relief tube (9) being fixedly disposed at an inner wall of the sleeve tube (2) extending along a length direction of the sleeve tube (2), there being a gap between a right end of the pressure relief tube (9) and a left side surface of the blocking plate (10), a left end of the pressure relief tube (9) having connected thereto a relief valve (8); a left end the bolt body (4) being provided with a piston (3) slidingly and sealingly fit to an inner wall of the sleeve tube (2) and an outer wall of the pressure relief tube (9), the blocking plate (10) having disposed thereon at an inner wall of the guide hole a sealing ring slidingly and sealingly fit to an outer circle of the left part of the bolt body (4), an emulsion (5) being loaded into a sealed cavity formed between the blocking plate (1) and the piston (3) in the sleeve tube (2).
An ultrasonic longitudinal torsion composite rolling device having a wireless transmission function, comprising a cutter body (5), wherein the head of the cutter body is of a wedge-shaped structure and serves as an amplitude-variable rod; a rolling wheel (1) is provided at the front end of the head of the cutter; a groove (16) is provided in the middle of the cutter body (5); a transducer assembly (10) is provided in the groove (16); a heat dissipation fan (7) is provided at the tail part of the cutter body (5); a through hole (17) is provided between the heat dissipation fan (7) and the groove (16); a wireless transmission sensing disc (6) is further provided at the tail end of the cutter body (5); the transducer assembly (10) is connected to the wireless transmission sensing disc (6) by means of a cable; an ultrasonic power supply (35) is connected to a wireless transmission fixing disc (30) by means of a cable; the wireless transmission fixing disc (30) corresponds to the wireless transmission sensing disc (6); and a signal of an ultrasonic generator is input to the transducer assembly (10). According to the ultrasonic longitudinal torsion composite rolling device, the structure is simple; the numerical control cutter changing of an ultrasonic cutter is implemented; the operation is simple; the disassembly is convenient; the processing precision is improved; and the surface quality is also improved.
An integrated ultrasonic longitudinal-bending composite machining tool for a difficult-to-machine material. The tool comprises a tool body (1); a tool head portion (2) connected to a front end of the tool body (1) and having a wedge structure; and a machine-held cutting blade (3) installed at a front end of the tool head portion (2). The composite machining tool is fastened to a tool holder of a turret lathe. A signal of an ultrasonic generator is input into a transducer assembly (4) by an aviation plug (5), such that the transducer assembly generates regular high-frequency vibration, and accordingly drives the tip of the tool to generate a longitudinal-torsional vibration amplitude, thereby achieving ultrasonic machining. The entire device has a small volume, is easy to operate, assemble and disassemble, provides higher machining precision than conventional machining, and reduces the number of machining steps, thereby improving the efficiency of machining and lowering costs.
A building material product prepared using building gypsum and slaked lime, and a preparation method for the building material product. By mass percentage, the product consists of 60%-90% building gypsum and 10-40% slaked lime, wherein the water-to-material ratio is 0.1-0.3. The product is prepared via a carbonation curing method, wherein the pressure for press-forming is 1-5MPa, the pressure of a carbon dioxide reaction vessel is 0.2-0.3MPa, and the carbonation curing lasts for 2-24 hours. The product is placed in the carbon dioxide curing vessel for curing, the carbonation efficiency is high, and the product has a 2-hour compressive strength of ≥20MP and a 24-hour strength of ≥30MPa. In addition, the water resistance is good, the water resistance coefficient being approximately 1.0, and the product may be used as an outdoor load-bearing wall material.
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
C04B 111/27 - Water resistance, i.e. waterproof or water-repellent materials
Pile-soil contact surface shear mechanical property testing equipment, comprising a support apparatus (1), a pressure apparatus (2), a film container (3), and a thrust apparatus (4). The support apparatus (1) comprises a base plate (1.1), a top plate (1.2), a support beam (1.3), and multiple support columns (1.4). Through holes used for the insertion of a pile test sample (5) are provided on the base plate (1.1) and the top plate (1.2). The pressure apparatus (2) comprises a vertical loading apparatus (2.1) and a force transmission rod (2.1a). The vertical loading apparatus (2.1) applies a vertical pressure to the pile test sample (5) via the force transmission rod (2.1a). The film container (3) comprises a film cylinder (3.1), a water permeable plate (3.2), and a sealing cover (3.3). The film cylinder (3.1) is sleeved on the radial exterior of the pile test sample (5). An accommodating cavity for accommodating a soil test sample (6) is provided between the film cylinder (3.1) and the pile test sample (5). The thrust apparatus (4) is sleeved on the film cylinder (3.1) and provides a thrust in the direction perpendicular to the axial direction of the pile test sample (5) to squeeze the soil test sample (6) in the film container (3). The pile-soil contact surface shear mechanical property testing equipment is structurally simple and easy to operate, allows the accurate simulation of the mechanical properties of the pile soil of different types of pile foundations in actual projects, and facilitates the research on pile-soil experiments.
Embodiments of the present disclosure provide a test apparatus for pile-soil interface shear mechanical properties, comprising a support device, a pressure device, a membrane box, and a thrust device; wherein the support device comprises a bottom plate, a top plate, a support beam, and a plurality of bracing struts, the bottom plate and the top plate being both provided with a through-hole for inserting a model pile. The test apparatus for pile-soil interface shear mechanical properties according to the present disclosure has a simple structure and is easy to operate, which may accurately simulate mechanical properties of pile soils having different types of piled foundations in actual works, thereby facilitating researches on pile-soil testing.
A liquid injection type reamer bit, comprising a drilling and reaming rod (1), a drilling tool (2) and reaming tools (3). The central axis of the drilling and reaming rod (1) is provided in the front and rear direction, and a front end of the drilling and reaming rod (1) is coaxially provided with a high-pressure water cavity (4) which is open at a front end and cylindrical in shape. A water injection hole (5) is provided inside the drilling and reaming rod (1) along the direction of the central axis. A front end of the water injection hole (5) is in communication with the high-pressure water cavity (4). A rear end of the drilling tool (2) is slidably connected in the high-pressure water cavity (4). There are several reaming tools (3) which are provided uniformly along the circumferential direction of the front end face of the drilling and reaming rod (1), and the front inner sides of the reaming tools (3) are press-fitted with a conical surface of the drilling tool (2). The reamer bit is used to perform the operations of drilling and reaming respectively by adjusting the water pressure, so that this reamer bit has a simple structure, is easy to operate, has a small volume and a light weight, is flexible and reliable in technique, has a uniform power source for drilling and reaming, is stable in reaming, and has tools that are easy to retract, achieving the advantage of drilling and reaming at the same time, greatly improving the security of the anchoring of an anchor rod, and ensuring the safety of a worker during the downhole work.
E21B 10/32 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
93.
Graded early warning system for rollover of heavy-duty truck based on time-varying interactive kalman filtering and early warning method thereof
Disclosed is a graded early warning system for rollover of heavy-duty truck based on time-varying interactive Kalman filtering and early warning method thereof. The system includes an infrared speed measuring module, a gyroscope, a humidity signal acquisition sensor, a bluetooth data transmission module and a main control chip. The infrared speed measuring module, the gyroscope, the humidity signal acquisition sensor are respectively connected with input ends of the main control chip through control lines. A video output end of the main control chip is connected with a liquid crystal display through video signal line. The main control chip is wirelessly connected with a mobile phone through the bluetooth data transmission module.
The present invention relates to a reciprocating sampling method and device for use in fixed-point sampling of gas content, wherein the method comprises the following steps: 1) performing sectional drilling, according to a predetermined drilling path, on a hollow drill which has a coal core tube fixed at the front end thereof; 2) when the hollow drill drills to a predetermined depth for sampling, pushing the coal core tube to the front end of the hollow drill for fixation, and when the hollow drill once again drills to a sampling length and a coal sample enters within the coal core tube, inflating an air bag at the front end of the coal core tube and sealing the front end of the coal core tube after the expansion of the air bag; 3) taking out the sealed coal core tube along the inner hole of the hollow drill, and taking out the coal sample from the coal core tube after the air bag is deflated, thus completing fixed-point sampling.
Disclosed is a multi-stage pressure bearing permeable hole sealing method, comprising thefollowing steps: 1) performing multi-segment expansion hole sealing at a position to be sealed in a borehole, wherein the number of segments for expansion hole sealing is not less than four, and a permeable hole sealing segment is retained between adjacent expansion hole sealing segments; 2) performing multi-stage interval grouting in the permeable hole sealing segments, and retaining a permeable hole sealing segment for next-stage grouting between the permeable hole sealing segments for previous-stage grouting; and performing the next-stage grouting after the previous-stage grouting is completed, wherein the pressure of the next-stage grouting is greater than the pressure of the previous-stage grouting; and 3) after the grouting pressure of a permeable hole sealing segment for the final-stage grouting reaches a pre-determined value, completing hole sealing. Further disclosed is a multi-stage pressure bearing permeable hole sealing device. The method and the device can increase the grouting pressure on the basis of a conventional two-sealing-and-one-grouting hole sealing method, thus improving the quality of hole sealing, solving the problem of the low extraction concentration of coal mine gas, and realizing high-concentration and high-quality gas extraction from an extraction borehole in a mine.
Disclosed is an anchor-bolt hole interior reamer used for mining. Said reamer comprises a reaming cutter, a sleeve (1), a push-pull rod (2), a drilling-rig connecting shaft (3), and a manual hydraulic jack (4); the push-pull rod (2) is coaxially arranged inside the sleeve (1); the rear end of the reaming cutter is connected to the front end of the push-pull rod; the rear end of the sleeve (1) is coaxially fixedly connected, in sequence, to a guide tube (6) and an installation tube (7); the manual hydraulic jack (4) is fixedly arranged inside the installation tube (7); the rear end of the push-pull rod (2) is fixedly connected to a piston plate (11) slidingly sealingly fitted to the inside circumferential wall of the guide tube (6); the front end of the drilling-rig connecting shaft (3) is fixedly connected to the rear end of the installation tube (7); the inside wall of the sleeve (1) is fixedly provided with at least two guide sleeves (13) sleeved on the exterior of the push-pull rod (2). The reamer is simple to operate, reaming performance is stable, the cutter may actively open and effectively retract, and the invention is capable of effectively addressing the problem of failure of the anchor bolt caused by sliding and instability between the anchor bolt and the hole wall; the safety of the mine shaft is improved, the production efficiency of the mine is increased, and the invention has great significance for achieving safe and highly efficient exploitation and support of the mine.
E21D 20/02 - Setting anchoring-bolts with provisions for grouting
E21B 10/32 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
E21B 7/28 - Enlarging drilled holes, e.g. by counterboring
97.
Method for generating hydroxyl radical and removing organic pollutants in water by utilizing an organic membrane
The present invention provides a method for generating hydroxyl radicals and removing organic pollutants in water by utilizing an organic membrane. The inventive method generates hydroxyl radicals by adopting a nitrocellulose membrane as a photocatalytic material, placing the nitrocellulose membrane in water, illuminating with the sun or a sunlamp having a wavelength above 280 nm as a light source, and causing the nitrocellulose membrane to undergo a photochemical reaction at the membrane surface, and the generation rate of hydroxyl radicals can be achieved by adjusting the surface area of the membrane and a light intensity. The generated hydroxyl radicals can remove phenol, bisphenol A, thiamphenicol and other typical organic pollutants in water very well. Such method for generating hydroxyl radicals is simple, economical and efficient, and does not need to introduce any hydroxyl radicals precursor into the aqueous solution; and hydroxyl radical are generated on the surface of a solid phase membrane, bring no secondary pollution, and can be applied to sewage treatment and other fields.
C02F 1/32 - Treatment of water, waste water, or sewage by irradiation with ultraviolet light
C02F 1/72 - Treatment of water, waste water, or sewage by oxidation
B01D 71/20 - Esters of inorganic acids, e.g. cellulose nitrate
B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
A method for applying an organic membrane for generating a hydroxyl radical. The method comprises: using a nitrocellulose sheet as a photocatalytic material, placing the sheet in water, and exposing the sheet to natural sunlight or light from a sun lamp with a wavelength greater than 280 nm so as to produce the hydroxyl radical by means of a photochemical reaction on the surface of the sheet. The rate of hydroxyl radical generation can be realized by modulating a surface area of a film or an intensity of the light. The invention further discloses a method for using an organic film for generating a hydroxyl radical so as to remove organic pollutants from water. The hydroxyl radical produced using the method can effectively remove common organic pollutants such as phenol, bisphenol A, thiamphenicol, and the like from water. The method for generating the hydroxyl radical is simple, economic, and highly effective. The method does not require introduction of a hydroxyl radical precursor and the hydroxyl radical is generated on a surface of a solid film, and thus does not generate secondary pollution. The method can be used in the field of wastewater treatment.
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