An automatic monitoring tracking method and apparatus for a camera in a fully mechanized coal mining face. The method comprises: when it is detected that the position of a coal mining machine on a fully mechanized coal mining face has changed, acquiring the current position of the coal mining machine; on the basis of the current position, and structure information of the coal mining machine, performing region division on the fully mechanized coal mining face, so as to obtain a plurality of regions; and for each region, performing, by means of a camera located in the region, real-time monitoring on equipment located in the region, wherein the camera in the region is arranged on a hydraulic support located in the region.
Provided are an energy efficiency evaluation method and apparatus for an equipment system of a fully mechanized coal mining face. The method comprises: executing at least one round of evaluation process on the basis of an evaluation sequence of at least one evaluation level; for any round of evaluation process, acquiring at least one group of monitoring data of an equipment system of a fully mechanized coal mining face corresponding to the current round of evaluation process, wherein the time interval between two adjacent groups of monitoring data is determined on the basis of an evaluation level corresponding to the current round of evaluation process; on the basis of the evaluation level corresponding to the current round of evaluation process and the at least one group of monitoring data, determining at least one energy efficiency index corresponding to the evaluation level; on the basis of the at least one group of monitoring data, using an energy efficiency evaluation model to determine an evaluation value corresponding to the at least one energy efficiency index; and on the basis of each evaluation value, determining whether to perform the next round of evaluation process.
G06Q 10/0637 - Strategic management or analysis, e.g. setting a goal or target of an organisationPlanning actions based on goalsAnalysis or evaluation of effectiveness of goals
3.
METHOD AND APPARATUS FOR ANALYZING COAL WALL RIB SPALLING TREND AND AREA OF FULLY MECHANIZED COAL MINING FACE
The present disclosure relates to the technical field of coal seam mining. Provided are a method and apparatus for analyzing a coal wall rib spalling trend and area of a fully mechanized coal mining face. The method comprises the specific steps of: collecting angle data, which is sent by a three-axis tilt angle sensor, of a target monitoring position in the advancing direction of a working face; collecting first stand column pressure data and second stand column pressure data; determining a pose category of a hydraulic support; generating a two-dimensional heat map of stand column pressure distribution of the overall hydraulic support on the working face; acquiring a change boundary of a resultant force action point of a hydraulic support top beam, and generating a two-dimensional heat map of top-beam stress distribution of the overall hydraulic support on the working face; and acquiring a first rib-spalling range annotation image and a second rib-spalling range annotation image, and acquiring an early-warning level of a coal wall rib spalling area of the working face according to the pose category. In the present disclosure, a rib spalling area is identified by means of jointly analyzing angle data of a target monitoring position and a two-dimensional heat map of pressure distribution, and a corresponding early-warning level is acquired, thereby avoiding dangers caused by the rib spalling area, and ensuring the safe and efficient stoping of the working face.
Provided are a method and system for quantitatively pushing a hydraulic support. The method comprises: step S101, acquiring a target pushing amount, controlling a binocular camera to capture an image, and calculating the initial distance between a scraper conveyor and the binocular camera using a binocular vision distance measurement algorithm; step S102, controlling the pushing of a hydraulic support according to the target pushing amount; step S103, calculating a distance after movement according to a re-captured image; step S104, calculating an actual pushing amount of the hydraulic support, determining whether the absolute value of the difference between the actual pushing amount and the target pushing amount is less than a preset error threshold, if so, completing the pushing, and if not, executing step S105; and step S105, updating the numerical values of the target pushing amount, the initial distance and the current distance, and returning to execute step S102.
The present application provides an overlying rock damage height determination method and apparatus, an electronic device and a storage medium. The method comprises: acquiring the positions and energy values of micro-seismic events by means of a plurality of micro-seismic monitoring stations arranged underground and on the ground; determining a first target range according to the predicted development height of a water flowing fractured zone of a working face, a displacement angle of a stratum and the position of a mining roadway; converting each micro-seismic event in the first target range into a basic micro-seismic event according to the ratio of the energy value of each micro-seismic event in the first target range to a set value; selecting a second target range according to the predicted development height, and determining a tracking radius according to the limit span of a roof in the second target range; and searching the first target range according to a set direction and the tracking radius, determining core points of the micro-seismic events according to the number of basic micro-seismic events in the tracking radius, and determining an overlying rock damage height according to the coordinates of the highest points in the core points.
The present application provides a method and system for determining a hydraulic fracturing roof-cutting pressure relief time of a dynamic pressure tunnel. The method comprises: acquiring original rock stresses of a plurality of fracturing drill holes in a coal mine preset mining area; recollecting mining-induced stresses of the plurality of fracturing drill holes; respectively calculating the maximum principal stress of each fracturing drill hole to determine a first included angle between the azimuth angle of the maximum principal stress and the axial direction of a tunnel in the coal mine preset mining area, and a second included angle between the inclination angle of the maximum principal stress and the axially vertical direction of the tunnel; acquiring preset minimum ranges of the first included angle and the second included angle, and determining a plurality of fracturing drill holes corresponding to the preset minimum ranges; and determining the time corresponding to an advanced working face distance of the plurality of fracturing drill holes in the coal mine preset mining area as an optimal fracturing time for performing fracturing operation. According to the present application, the optimal fracturing time of a rock stratum is obtained by analyzing a rock stratum stress evolution rule, so that a crack is expanded in the vertical direction and the axial direction of the tunnel as far as possible, and thus an optimal roof-cutting effect is achieved, thereby controlling the deformation of the dynamic pressure tunnel.
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
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
E21F 17/00 - Methods or devices for use in mines or tunnels, not covered elsewhere
E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal
A vehicle control system includes: an on-board control module, configured to control driving of the vehicle according to a control instruction sent by a vehicle dispatching command platform; a vehicle state module, configured to collect state information of the vehicle; an environment sensing module, configured to collect first road environment information of the vehicle; a UAV scanning module, configured to collect second road environment information of the vehicle; a data center module, configured to generate fusion information according to the state information, the first road environment information, and the second road environment information; a map module, configured to generate a driving route map of the vehicle according to the fusion information; and a vehicle dispatching command platform, configured to generate the control instruction according to the fusion information and the driving route map.
H04W 4/46 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
8.
ZERO-POWER-CONSUMPTION MULTI-PATH CARBON DIOXIDE RECOVERY DEVICE IN COAL MINE AIR SHAFT
Disclosed is a zero-power-consumption multi-path carbon dioxide recovery device in a coal mine air shaft, the device comprising an air shaft (1), dust cleaners (6), gas collection chambers (4) and carbon dioxide condensation mechanisms (2), wherein a peripheral side of a side wall of the air shaft (1) is provided with a plurality of adjustable variable-speed air ducts (3) in communication with the air shaft; and each adjustable variable-speed air duct (3) has a diameter gradually decreasing from an air inlet to an air outlet thereof, the dust cleaner (6) is connected to an air outlet of the adjustable variable-speed air duct (3), the gas collection chamber (4) is connected to the dust cleaner (6), and the carbon dioxide condensation mechanism (2) is connected to the gas collection chamber (4) for condensing the received dried airflow, so that carbon dioxide in the airflow is condensed into liquid carbon dioxide. The airflow is initially cooled by means of the adjustable variable-speed air duct and then sequentially cooled by means of the dust cleaner and the gas collection chamber, and then the dried airflow after three times of cooling is introduced into the carbon dioxide condensation mechanism for condensation, so that the condensation effect of carbon dioxide is improved.
Disclosed are a method and system for temporary coating supporting and permanent bolt supporting. Tunnel excavation construction operation is composed of a plurality of operation cycle units, and each of the operation cycle units includes: excavating by at least one row pitch to form a new tunnel; spraying a coating material onto a surface of the new tunnel to form a sealing coat on a surface of surrounding rock, wherein the sealing coat has an adhesive property and a sealing property both meeting preset conditions, and has a tensile strength and a toughness needed for supporting; and inserting bolts into the new tunnel to perform permanent supporting.
Disclosed is an anchor rod construction assembly, comprising a base (1), a first shaft (10) and a second shaft (20), wherein the first shaft (10) is rotatably mounted on the base (1); a driver (2) is connected to the first shaft (10) so as to drive the first shaft (10) to rotate; and the second shaft (20) is movably inserted in a first through hole (103) along an axial direction of the second shaft. An anchor rod (9) comprises a rod body (95), a drill bit (96), a pre-tightening nut (92) and a limiting block (91), wherein the rod body (95) is provided with a third through hole (953) penetrating the rod body in an axial direction thereof, and the third through hole (953) is capable of being in communication with each second through hole (203); when the first shaft (10) drives the pre-tightening nut (92) to rotate in a first direction, the pre-tightening nut (92) drives the rod body (95) to rotate in the first direction; and when the first shaft (10) drives the pre-tightening nut (92) to rotate in a second direction opposite to the first direction, the pre-tightening nut (92) applies a pre-tightening tensile force away from a first end of the first shaft (10) to the rod body (95). The anchor rod construction assembly has the advantages of high efficiency anchor rod support operation, low labor intensity of workers, etc.
An automated construction method for an anchor bolt, the automated construction method comprising the following steps: using an oil pressure sensor for acquiring an oil pressure signal, and using a laser ranging sensor for acquiring an advancing signal of a drill box (5000); according to the oil pressure signal, controlling a support oil cylinder (6000) to drive a support plate (4200) to advance and stop moving, so as to support a tunnel wall and guide an anchor bolt (9); after the support plate stops moving, injecting water into the anchor bolt by using a water injection device; controlling a hydraulic motor (5100) on the drill box to rotate reversely, so as to drive the anchor bolt to rotate forwards; and according to at least one of the oil pressure signal and the advancing signal, controlling a drilling oil cylinder (7000) to drive the drill box to advance and stop moving, such that the anchor bolt, which rotates forwards, advances to drill. The automated construction method for an anchor bolt has the advantages of a high automation degree, a high anchor bolt supporting operation efficiency and low labor intensity for workers.
E21D 20/02 - Setting anchoring-bolts with provisions for grouting
E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
12.
System for navigation detection and inclination measurement of advanced hydraulic supports
Shandong University of Science and Technology (China)
Tiandi Science & Technology Co., Ltd. (China)
Inventor
Li, Yuxia
Zhang, Kun
Huang, Liangsong
Xu, Yajun
Ma, Ying
Zhang, Desheng
Sun, Shaoan
Su, Jinpeng
Chen, Hongyue
Wu, Si
Liu, Zengkai
Abstract
A system for navigation detection and inclination measurement of advanced hydraulic supports, including a detection device module, a signal transfer transmission module, connected to the detection device module, and used to integrate ultrasonic signals and inclination signals received from all advanced hydraulic supports and then wirelessly transmit all the signals to an analysis and processing module. The analysis and processing module, connected to the signal transfer transmission module, and used to receive the signals from the signal integration and transmission device for analysis, where if an analysis result shows an abnormal situation, an alarm will b e immediately given to a worker. If the analysis result shows a continuous abnormal situation, or a relatively large value indicating the abnormal situation is generated, a command will be immediately sent to make the advanced hydraulic supports stop operating in a current mode.
Disclosed are a spraying temporary support and bolt permanent support method and system; a tunnel excavation construction operation is composed of a plurality of operation cycle units, and each operation cycle unit comprises the following steps: tunnelling by at least one row pitch to form a newly excavated tunnel; spraying a spray material onto the surface of the newly formed tunnel to form a sealing spray layer on the surface of surrounding rock; and forming permanent support for the newly excavated tunnel by constructing bolts. Effective support is formed by means of a spray layer for a newly formed tunnel, tunnelling and support are successively achieved, the technological process is simple and convenient, and a heading machine-mounted roof or a self-moving shed support is not required to support surrounding rock, reducing consumed time and increasing a supportable area of a tunnel, and satisfying the requirements of rapid excavation of a coal mine tunnel. In addition, a manual carrying manner is not required to support a tunnel, reducing labor intensity and increasing support efficiency. Also disclosed is a drilling, grouting, anchoring, and pretensioning integrated bolt support device, comprising a bolt mechanism, a drive mechanism, a grouting mechanism, and a thrusting mechanism. Also disclosed is a construction method for a drilling, grouting, anchoring, and pretensioning integrated bolt support device. The drilling, grouting, anchoring, and pretensioning integrated bolt support device has a simple structure, is easy to operate, and ensures a support effect.
E21D 11/10 - Lining with building materials with concrete cast in situShuttering or other equipment adapted therefor
E21D 11/00 - Lining tunnels, galleries or other underground cavities, e.g. large underground chambersLinings thereforMaking such linings in situ, e.g. by assembling
14.
SYSTEM AND METHOD FOR DETECTING FULL-LENGTH FLUCTUATION STATE OF SCRAPER CONVEYOR OF FULLY-MECHANIZED COAL MINING WORKING FACE
A system and a method for detecting a full-length fluctuation state of a scraper conveyor of a fully-mechanized coal mining working face. The detection system consists of a hydraulic support base proximity switch triggering module (1), a single-section scraper conveyor posture control digital hydraulic cylinder displacement measurement module (2), a single-section scraper conveyor middle groove fluctuation angle calculation module (3), and a scraper conveyor full-length fluctuation state output module (4). The base proximity switch triggering module (1) detects an elevation angle of a hydraulic support push rod (501), the single-section scraper conveyor posture control digital hydraulic cylinder displacement measurement module (2) measures the amount of extension or retraction of a push rod of a scraper conveyor posture control hydraulic cylinder (201), the single-section scraper conveyor middle groove fluctuation angle calculation module (3) calculates a fluctuation angle of a single-section scraper conveyor middle groove (502); and finally, the scraper conveyor full-length fluctuation state output module (4) draws a full-length fluctuation curve of a scraper conveyor of a whole working face. The dynamic fluctuation change of a scraper conveyor in the vertical direction of a working face can be effectively monitored, providing a data foundation for subsequent adjustment of a fluctuation degree of the scraper conveyor.
G01B 21/22 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapersMeasuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for testing the alignment of axes
15.
INTELLIGENT DECISION CONTROL METHOD AND SYSTEM FOR FULLY-MECHANIZED MINING EQUIPMENT USED FOR WORKING SURFACE UNDER COMPLEX CONDITION
Disclosed is an intelligent decision control method and system for fully-mechanized mining equipment used for a working surface under a complex condition. The system comprises a full pose measurement system (100) of the fully-mechanized mining equipment, a mine pressure monitoring system (200), a virtual simulation system (300), an analysis and decision system (400), and a distributed control system (500). In the system, 15 spatial parameters and mine pressure data of the equipment in a real-time operating state are measured; a real mining process is simulated by means of data stacking; an equipment anomaly caused by a complex geological condition is calculated, and a surrounding rock state is predicted; error elimination and surrounding rock control methods based on known process methods and historical data learning results are proposed; subsequent mining control parameters are predicted; and optimization and decision of control parameters of downhole fully-mechanized mining equipment are completed on the basis of real data and a virtual simulation result, so as to ensure that equipment control under complex geological conditions can be consistent with actual environmental conditions, thereby improving the operation quality of the fully-mechanized mining equipment.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
E21C 35/24 - Remote control specially adapted for machines for slitting or completely freeing the mineral
A unified position and posture monitoring system for fully mechanized coal mining face devices, relating to the technical field of coal mining face monitoring and automatic control, capable of monitoring position and posture information of fully mechanized coal mining face devices in a unified and overall manner. The system comprise: a hydraulic support position and posture monitoring subsystem (10) for monitoring posture information of hydraulic supports and the relative position between adjacent hydraulic supports; a shearer position and posture monitoring subsystem (20) for monitoring the posture information of the shearer and the position relative to the shearer, the hydraulic supports, and a scraper conveyor; a scraper conveyor position and posture monitoring subsystem (30) for monitoring the posture information of a single chute of the scraper conveyor and the relative positions between adjacent chutes and between chutes and hydraulic supports; a three-unit overall position and posture monitoring subsystem (40) for monitoring the spatial positions of the hydraulic supports, the shearer, and the scraper conveyor relative to the coal mining face during coal mining; and a position and posture calculation module (50) for converting the data above to represent same in a unified coordinate system and calculating the spatial positions and postures of the three units.
SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
TIANDI SCIENCE & TECHNOLOGY CO., LTD. (China)
Inventor
Li, Yuxia
Zhang, Kun
Huang, Liangsong
Xu, Yajun
Ma, Ying
Zhang, Desheng
Sun, Shaoan
Su, Jinpeng
Chen, Hongyue
Wu, Si
Liu, Zengkai
Abstract
An advanced hydraulic support navigation detection and inclination angle measurement system, comprising: a detection device module used for detecting the distance from an obstacle to a forepoling hydraulic support and collecting an inclination angle signal of the forepoling hydraulic support; a signal transfer and transmission module connected to the detection device module, and used for summarizing and sorting the received ultrasonic signals and inclination angle signals from advanced hydraulic supports according to the serial number of each hydraulic support, and then transmitting the signals to an analysis processing module (13); and the analysis processing module (13) connected to the signal transfer and transmission module, and used for receiving and analyzing wireless signals from a signal integration transmitter (11), immediately sending an alarm to a worker if the analysis result is found to be abnormal, and immediately sending an instruction to stop the working mode of the advance hydraulic support if the analysis result continues to be abnormal or the abnormal value is large. The safety work efficiency of the advanced hydraulic support can be effectively improved, the safety coefficient thereof in a working process can be improved, and the advancement of intelligent coal mining can be reflected.
patents
