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A three-dimensional similar simulation test system for gas-liquid counterflow in goafs of abandoned mines

A similar simulation and test system technology, applied in the field of three-dimensional similar simulation test system of gas-liquid countercurrent in goaf of abandoned mine, can solve the problems that do not meet the engineering background, can not meet the requirements of gas-liquid two-phase countercurrent test in goaf, etc. Manpower saving effect

Active Publication Date: 2020-12-29
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problem of countercurrent flow of gas and water, gas and liquid in the goaf of abandoned mines, the existing single-plane similar simulation system and the traditional similar simulation system without water and gas environment are no longer in line with the actual engineering background, and cannot meet the requirements of gas and liquid in the goaf. Liquid two-phase countercurrent test requirements, so it is urgent to design a three-dimensional similar simulation test system for gas-liquid counterflow in the goaf of abandoned mines, and carry out similar simulation experiments on the evolution of water and gas migration in the goafs of abandoned mines in the laboratory

Method used

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  • A three-dimensional similar simulation test system for gas-liquid counterflow in goafs of abandoned mines
  • A three-dimensional similar simulation test system for gas-liquid counterflow in goafs of abandoned mines

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Embodiment 1

[0025] This embodiment provides a three-dimensional similar simulation test system for gas-liquid counterflow in the goaf of an abandoned mine, such as figure 1 and figure 2As shown, it includes a three-dimensional similar simulation device for simulating the similar environment of gas-liquid counterflow in the goaf of an abandoned mine, a gas supply system, a water pressure automatic control system, and a hydraulic loading system; the three-dimensional similar simulation device includes a reaction frame and a three-dimensional similar simulation chamber Body 1.1; the reaction frame includes a beam 1.2, a base 1.3 and a column 1.4 connecting the beam 1.2 and the base 1.3; the three-dimensional similar simulation cavity 1.1 is set in the reaction frame; in the three-dimensional similar simulation cavity 1.1, it starts from the bottom of the cavity and goes upward The similar materials corresponding to the formation conditions of the required simulated mine are evenly laid, and...

Embodiment 2

[0041] This embodiment is based on the three-dimensional similar simulation test system of gas-liquid counterflow in the goaf of an abandoned mine described in Example 1, and similar materials are laid in the three-dimensional similar simulation cavity 1.1 to form a specific rock formation simulant, such as figure 2 As shown, starting from the bottom, there are bottom channel steel 104, brick layer 105, floor 106, gas supply layer 107 (pre-buried gas supply pipe 3.5), coal rock layer, water permeable layer 108, aquifer 109 (pre-buried water supply pipe 3.5) and topsoil layer 110, excavated in the coal rock layer to form a goaf.

[0042] Specifically, the size of the three-dimensional similar simulation chamber 1.1 is 3×2.5×5 m³, and the pipes of the system are all made of 3 mm high-pressure stainless steel pipes, through which the ferrule-type ball valve, ferrule-type tee, ferrule-type four-way, etc. Connect the joint parts, tighten the screws at the connecting parts, and che...

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Abstract

A three-dimensional analog simulation test system for gas-liquid countercurrent in an abandoned mine goaf includes a three-dimensional analog simulation device configured to simulate an analog environment of gas-liquid countercurrent in an abandoned mine goaf, a gas supply system, an automatic water pressure control system and a hydraulic loading system. The three-dimensional analog simulation device includes a reaction frame and a three-dimensional analog simulation chamber. The reaction frame includes a beam, a base and a column for connecting the beam and the base. The three-dimensional analog simulation chamber is arranged inside the reaction frame. The test system can be used to simulate the gas-liquid countercurrent in an abandoned mine goaf so as to study the evolution of water accumulation and gas enrichment in long-term abandonment of closed mines and the migration evolution rules of gas-liquid two-phase in abandoned mines with high gas density.

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 three-dimensional similar simulation test system for gas-liquid counterflow 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. According to the prediction of relevant experts, the number of abandoned mines in my country will reach 12,000 in 2020, and will reach 15,000 by 2030. Among them, the gobs of abandoned mines contain abundant resources. 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, and great development potential. The good development and utilization of this part of coalbed methane resources ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/24E21F1/02G01V99/005E21C39/00G05B11/01G05D16/2066
Inventor 冯国瑞张纯旺金智新王朋飞胡胜勇李振宋诚宋选民牛小红崔家庆
Owner TAIYUAN UNIV OF TECH
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