Abrégé

A wall continuous mining and continuous filling water-preserved coal mining method, and a water resource migration monitoring and water disaster early warning method. In the coal mining method, a normal wall working face is divided along the strike direction into "mining-filling" and "mining-retaining" mining blocks alternately arranged; no coal pillar is retained between mining roadways in a "mining-filling" mining block (1), and a roadway with the excavation completed is filled; narrow coal pillars (10) are retained between mining roadways in a "mining-retaining" mining block (2), and a roadway with the excavation completed is not filled.In the early warning method, an infrared thermal imaging system is used for observing surface infrared radiation information of an excavation space, and predicting and forecasting a dynamic disaster such as backfill object or narrow coal pillar instability. An water resource migration monitoring and water disaster early warning system is used for comprehensive monitoring, early warning, and reasonable evaluation of water resource loss in a mining area caused by coal mining and water disasters easy to occur in a mining stope.

Classes IPC  ?

• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

Disclosed in the present invention is a infrared radiation quantitative characterization method for the damage evolution of coal-bearing rocks. In the present method, the maximum value of an infrared radiation temperature change matrix of coal rocks is referred to as a threshold value for infrared radiation change of the coal-bearing rock due to microelement damage. The cumulative count of infrared radiation during the damage evolution process of the coal-bearing rock is screened. The infrared radiation quantitative characterization method for the damage evolution of coal-bearing rocks is constructed on the basis of the theory of continuous damage mechanics. By means of monitoring infrared radiation data in real time, the real-time process of the damage evolution of coal rock masses may be dynamically and accurately evaluated, which thereby improves mine safety production levels, and improves the stability and accuracy of coal rock mass monitoring in the field of modern rock mechanics and engineering.

Classes IPC  ?

• G01J 5/00 - Pyrométrie des radiations, p. ex. thermométrie infrarouge ou optique

Abrégé

Provided is a "five maps-three zones-two sub-areas" water-preserved coal mining method. The method comprises: analyzing data indexes in mining area engineering and hydrogeological data; determining an overlying strata type sub-area map, a bedrock thickness contour map, an aquifer water yield property sub-area map, an aquifuge thickness contour map and a coal seam thickness contour map (referred to as "five maps" for short); according to the "five maps", calculating the height of a caving zone, a water flowing fractured zone and a protection zone (referred to as "three zones" for short) under the condition of completely mining coal seams in different overlying strata type sub-areas; and also determining, in combination with the bedrock thickness, the aquifuge thickness and the aquifer water yield property, a sub-area for the degree of influence of coal mining on underground water, and a sub-area for the applicability of a water-preserved coal mining technique (referred to as "two sub-areas" for short). The method provides a new, comprehensive and systematic research method for water-preserved coal mining, and the method makes a water-preserved coal mining research process more standard, has strong practicability, and is simple and convenient to operate, and is easy to understand and popularize.

Classes IPC  ?

• E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
• E21C 41/00 - Procédés d'exploitation minière souterraine ou en surfaceTracés à cet effet

Abrégé

Disclosed are a shallow seam water conservation mining method and an application thereof. According to the method, in a working face, a plurality of pre-bored tunnels is vertically or obliquely demarcated from a main transport tunnel (1), tunnel boring is conducted at multiple sites at the same time, and the bored tunnels are filled in time. By controlling a tunnel boring width, a tunnel spacing width, a tunnel boring speed, a filling speed, and a spacing filling time, the fracture development of mining overburden rock and the subsidence amount of tunnel roofs are effectively controlled. By means of the method, continuous, stable, and efficient coal production of the working face is guaranteed, sufficient time and effective space are provided for filling of the working face so as to allow a filling body to solidify and to meet requirements for bearing strength, evolution of the permeability of a water-resisting layer on a water flowing fracture zone of a shallow seam is controlled effectively, water conservation mining of an occurrence area of the shallow seam is achieved, selection and application conditions of the water conservation mining method are widened, and meanwhile safe, efficient, and high-recovery-rate mining of coal resources is achieved.

Classes IPC  ?

• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond