Three-dimensional pressurized water coal mining pressure relief simulation test bench

Abstract

The invention discloses a three-dimensional confined aquifer coal mining pressure-release simulation testing platform which comprises a water supply device, a simulation testing tank, a support adjusting device and a data processing device, wherein the water supply device comprises a water supply tank, a water supply tube, a water supply pump, a pressure control pump and first to fourth valves; the simulation testing tank comprises a main tank body, a similar material, a cover plate, a water stabilization tank and a water collection tank; the upper end hole of the main tank body and the upperend hole of the water stabilization tank are covered and sealed with the cover plate; a plurality of grids are mounted on the inner side of the cover plate; the lower end of each grid is opened and embedded into the similar material; a water release hole for simulating confined aquifer coal mining water and pressure release is formed in the center of each grid on the cover plate; a water release tube is connected with each water release hole; a motor valve, a flow sensor and a pressure sensor are mounted in sequence on each water release tube. By adopting the platform, not only is the pressureof underground confined water really simulated, but also pressure variations in the pressure reduction process of the confined water are simulated, therefor, the minimum amount of water and pressurerelease of a confined water containing layer can be simulated and calculated.

Description

technical field [0001] The invention relates to a coal mine pressurized water discharge and pressure reduction test device, in particular to a three-dimensional pressurized water coal mining pressure relief simulation test bench. Background technique [0002] Confined water inrush in coal mine operations is a key safety issue that coal mine workers pay attention to. The hidden danger of water inrush is a great threat to the life and property safety of coal mine workers. The release and pressure reduction of the confined water strata is the key to prevent the confined water inrush. One of the important methods of water risk. At present, the research on the release and pressure reduction of confined water is mainly based on numerical simulation, and there are few test equipment for three-dimensional simulation of pressure relief in coal mining above confined water. The inventor retrieved the following relevant patent documents: CN105259045A discloses a similar simulation test...

AI Technical Summary

Problems solved by technology

[0003] The above technology does not give a specific guidance plan for how the present invention can truly simulate the pressure carried by the underground confined water, and can also simulate the pressure changes in the process of depressurization of the confined water.

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