A visual simulation test system of gas-liquid two-phase counterflow in the goaf of abandoned mine
A simulation test system and goaf technology, applied in the direction of instruments, surface/boundary effects, measuring devices, etc., can solve the problems that do not meet the engineering background, cannot meet the requirements of the goaf fracture network and gas-liquid counterflow test, and achieve saving human effect
Active Publication Date: 2021-02-12
TAIYUAN UNIV OF TECH
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Problems solved by technology
Aiming at the problem of gas and water gas-liquid two-phase counterflow in the goaf of abandoned mines, the existing single fracture simulation device and the traditional similar simulation system are no longer in line with the actual engineering background, and cannot meet the requirements of the goaf fracture network and gas-liquid counterflow. Therefore, it is urgent to design a gas-liquid counterflow simulation test system in the goaf of abandoned mines, and carry out visual simulation experiments of gas-liquid two-phase counterflow in goafs of abandoned mines in the laboratory.
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[0025] Such as figure 1 and figure 2As shown, this embodiment provides a visual simulation test system for gas-liquid two-phase counterflow in the goaf of an abandoned mine, including a simulation device for simulating the fissure network in the goaf of an abandoned mine, a gas supply system and an automatic water pressure control system; The device includes a transparent observation box 1 and rock formation materials arranged in the observation box 1; on the wall of the observation box 1 and / or on the rock formation materials, according to the required simulation of the rupture form and fracture network of the goaf of an abandoned mine, it is divided into the following types: Overlying aquifer 101, curved subsidence zone 102, fissure zone 103, collapse zone 104, coal seam support zone 105, abscission zone 106 and re-compaction zone 107; the gas supply system includes gas supply pipe 2.1 and 2.1 The gas bottle 2.2 that provides gas; the gas supply pipe 2.1 is set in the obse...
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Abstract
The invention provides a visual simulation test system of gas-liquid two-phase counterflow in the goaf of an abandoned mine, which belongs to the technical field of the simulation test system of the goaf of an abandoned mine, and includes a simulation device for simulating the fissure network of the goaf of an abandoned mine, a gas supply Gas system and water pressure automatic control system; the simulation device includes a transparent observation box and rock formation materials set in the observation box; the gas supply system includes a gas supply pipe and a gas bottle that provides gas for the gas supply pipe; the water pressure automatic control system includes a surge tank , pressure sensor, pressure regulating gas cylinder, water supply tank, pressure test water pump, water supply pipe and electronic controller. The system can be used to simulate the gas-liquid two-phase counterflow in the goaf network of abandoned mines, and to realize the counterflow visualization test, so as to reveal the evolution of water accumulation and gas enrichment in closed mines during the long-term abandonment process.
Description
technical field [0001] The invention relates to the technical field of a goaf simulation test system in an abandoned mine, in particular to a gas-liquid two-phase counterflow visualization simulation test system in the goaf of an abandoned mine. Background technique [0002] With the continuous increase of the mining intensity of coal resources in our country, more and more mines will be mined and completed as abandoned mines. It is estimated that the number of abandoned mines in my country will reach 12,000 in 2020 and 15,000 in 2030, of which There are abundant resources in the goaf of abandoned mines. It is preliminarily estimated that the coal resources in them are as high as 42 billion tons, and the coalbed methane resources are nearly 500 billion m³. my country has a large number of abandoned mines, rich resources, huge development potential, and good development and utilization. This part of coalbed methane resources can not only make up for the shortage of natural gas ...
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IPC IPC(8): G01N21/84G01N13/00G01N33/00
CPCG01N13/00G01N21/84G01N33/00G01N2021/8405
Inventor 张纯旺金智新冯国瑞宋选民胡胜勇李振李春宋诚崔家庆牛小红
Owner TAIYUAN UNIV OF TECH