6results about How to "Safe mining" patented technology

The present application provides a kind of coal mine with the integrated equipment of digging anchor, it includes body, supporting device and adjustment component;Supporting device includes support frame and guard plate component, support frame is connected with body and can be rotated around the straight line of the width direction of body relative to body, support frame includes the first frame body and second frame body connected, second frame body can be rotated around the straight line of the length direction of body relative to first frame body, guard plate component is arranged in second frame body;Adjustment component includes first driver, the output end of first driver is drivingly connected with second frame body, first driver is used to drive second frame body to rotate relative to first frame body, so that guard plate component adapts to the inclination angle of roadway roof.The present application can realize the efficient integration of tunneling and supporting by the cooperative work of body, supporting device and adjustment component, so that the equipment can flexibly adapt to various complex conditions of coal mine roadway, provide a safer and more efficient solution for coal mining.

The present application relates to the technical field of coal mine underground transportation equipment, and particularly relates to a fully mechanized coal mining face crossheading single rail train system and advancing method, wherein the fully mechanized coal mining face crossheading single rail train system comprises a trailer, a train set and a pipe cable telescopic device connected in sequence, the tail of the pipe cable telescopic device is connected with a reversed loader, a track is laid under the train set, the train set travels along the track, the trailer is connected with the track through a cross connector and drags the track to advance; the advancing method comprises the steps of pulling and moving the track, pulling and moving the train set, advancing the working face and cyclically advancing. The present application realizes the rapid and continuous movement of the train through the long-distance alternate movement of the track and the train, without the need of frequently disassembling and laying tracks and the need of winch steel wire rope traction, can effectively reduce the labor intensity and operation time of workers and improve the safety of train operation.

The application discloses a filling mining method of steeply inclined coal seam and relates to the technical field of coal mining. The method comprises the following steps: dividing each stage of the steeply inclined coal seam into upper layers, middle layers and lower layers; mining the upper layers, the middle layers and the lower layers; and forming a filling mining method of the steeply inclined coal seam with a sandwich type protection structure and a Z type filling structure during the mining process. The sandwich type protection structure is formed by consolidating a coal pillar, surrounding rock and concrete together, which can effectively protect the coal pillar from damage and maintain the stability of the mined-out area. The Z type filling body structure is formed by combining a reserved coal pillar, lower concrete and an inclined concrete column. The Z type filling body structure has a reserved coal pillar on the top and the bottom, and compared with other filling body structures, the Z type filling body structure formed by combining mining and filling is safer. The filling mining method of the steeply inclined coal seam can maintain the stability of the mined-out area and is beneficial to safe mining.

The application discloses a method for reinforcing the well wall of a hydrate exploitation well in a sea area by using mineralization deposition, and comprises the following steps: arranging a spray hole on the pipeline of the exploitation well and extending the spray hole to the outside of the well wall; arranging a plurality of pipelines along the well wall inside the well wall for conveying branched polyethylene imine (BPEI) solution and modified nano calcium carbonate dispersion; before hydrate exploitation, conveying the reagents from an exploitation platform to a specified reinforcement depth, and spraying the two reagents from the spray hole by using a high-pressure pump at a certain time interval and pressure; the two reagents are fully reacted in the soil layer around the well wall to generate mineralization deposits and improve the strength of the soil layer; the method can be repeated according to requirements to form multiple mineralization deposits to achieve the required reinforcement strength; the method is convenient to operate, the reinforcement process is clear, and the effect is remarkable, and the method fills the blank in the field of real-time reinforcement of the well wall of a hydrate exploitation well, and helps long-term, safe and efficient exploitation of hydrate energy, and has remarkable technical advantages.

This invention provides a physical simulation experimental device and method for fine exploration of water-bearing sections in underground rock strata. The device includes a water storage tank connected to a water pump. The water pump is connected to one end of multiple water supply valves via a one-way valve. Each water supply valve has a corresponding rock chamber at its other end. These rock chambers are vertically mounted on the sidewall of a simulated borehole pipe. Flange end caps are installed at both ends of the simulated borehole pipe. A return water inlet sealing head is installed on the flange end cap at the tail end of the simulated borehole pipe. The return water inlet sealing head is connected to the water storage tank via a return water valve. An energy storage and voltage regulator is also installed between the water storage tank and one end of the multiple water supply valves. An armored optical fiber cable for acoustic wave sensing is coaxially installed inside the simulated borehole pipe. This invention can effectively simulate various geological and hydrological conditions in actual underground rock strata environments. By analyzing the variation patterns of acoustic signals, it improves the accuracy of exploration of water-bearing sections, providing reliable technical support for coal mine water hazard prevention and safe production.

The invention discloses a coal face magmatic rock invasion pulse hydraulic fracturing efficient rock crushing control method, and particularly relates to the technical field of coal face control. An interference identification model is constructed based on microseismic event anisotropy ratio and spectrum offset coefficient characteristic parameters, and adaptive regulation and control and operation strategy adjustment of pulse frequency are realized through real-time monitoring and dynamic grading of interference degrees, so that energy accumulation and disaster risks caused by misjudgment are avoided; and meanwhile, a control strategy is continuously optimized based on operation feedback, and the accuracy and adaptability of fracturing response are improved, so that efficient, controllable and safe crack induction and crushing control are realized in a magmatic rock invasion body area, and the coal mining efficiency and the operation safety level are remarkably improved.