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Three-dimensional simulated experiment bench for coal and mash gas co-extraction

A simulation experiment, gas technology, applied in the direction of gas discharge, ground mining, mining equipment, etc.

Inactive Publication Date: 2008-08-20
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Also there is no a kind of experimental device in the prior art that can carry out above-mentioned experiment

Method used

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  • Three-dimensional simulated experiment bench for coal and mash gas co-extraction
  • Three-dimensional simulated experiment bench for coal and mash gas co-extraction
  • Three-dimensional simulated experiment bench for coal and mash gas co-extraction

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Embodiment Construction

[0014] The three-dimensional simulation test bench for co-mining of coal and gas of the present invention is preferably implemented as follows: figure 1 , figure 2 As shown, it includes a box body 1, and the box body 1 is provided with a pressurizing device for loading the ore in the box body 1, and the ore can be coal and gangue. A coal mining device is also provided, and the coal mining device can move on the box body 1 to simulate mining of the coal in the box body 1 . The box body is also provided with an air intake device and a plurality of gas detection sensors for detecting gas movement in the box body 1 .

[0015] The upper part of the box body 1 is provided with an upper cover 5 to facilitate loading and unloading of ore into the box body 1 . A plurality of oil cylinders 6 can be arranged on the upper cover 5, the cylinder body of the oil cylinder 6 is fixed on the box body 1, and the piston rod of the oil cylinder 6 extends into the inside of the box body 1, and i...

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Abstract

The invention discloses a three-dimensional simulation experiment table which mines coal and gas together. The experiment table includes a box body. The box body is provided with a pressurizing device used for uniformly loading on the rocks in the box body to realize mine pressure simulation. The experiment table is also provided with a coal mining device which can move at the bottom part of the box body to simulate the process of cutting coals by a coal mining machine. The box body is also provided with an air inlet device and a plurality of gas detecting sensors used for the simulation experiment of the gas to move in a porous medium in a mining field during the process of simulating the coal bed mining and the desorption and moving rules of the gas in the coal rock bodies that are relieved from pressure, deformed and crashed during the process of comprehensively researching the coal bed mining to work out the space-time evolvement and distribution rules of the coupling between the gas moving and the coal rock body cranny. Then the simulation research and mining scheme design on mining coal and gas together are carried out according to the researching result.

Description

technical field [0001] The invention relates to an experimental device, in particular to a three-dimensional simulation experimental bench for co-mining of coal and gas. Background technique [0002] After the coal mine is mined, the overlying stratum is ruptured, forming stress relief zones and strata rupture zones around the stope, thereby increasing the permeability of the coal body and the strata, and the gas in the coal body will be released and migrate in the fissure area. For high gas or coal and gas outburst coal seams, in order to avoid accidents such as gas explosion, it is generally necessary to conduct pre-mining gas pre-draining and gas drainage and control during the mining process to reduce the gas content in the coal seam. In order to improve the gas drainage efficiency , it is necessary to study the gas migration law during the mining process. At present, the research on gas migration law is mainly based on theoretical analysis, numerical simulation calcula...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21F7/00
Inventor 王家臣李华伟闫保金范志忠
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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