Coal and gas outburst simulation device with repeated test function and test method

A technology of repeated experiments and simulation devices, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of cumbersome steps, poor repeatability, long experimental period, etc., to improve work efficiency, good repeatability, and shorten the experimental period. Effect

Active Publication Date: 2016-08-24
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0005] (1) Poor repeatability
In the past outburst simulation process, coal and gas outburst experiments can only be done once with a coal sample, even if the outburst experiment is unsuccessful, coal samples must be loaded again, the steps are cumbersome and the experiment period is long
[0006] (2) It is difficult to truly simulate the outburst process of underground coal seams
At present, when simulating coal and gas outburst, all test devices are always in a closed system state before the outburst occurs (that is, the gas is completely sealed before the outburst is opened to prevent it from

Method used

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  • Coal and gas outburst simulation device with repeated test function and test method
  • Coal and gas outburst simulation device with repeated test function and test method
  • Coal and gas outburst simulation device with repeated test function and test method

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Abstract

The invention discloses a coal and gas outburst simulation device with a repeated test function. The coal and gas outburst simulation device comprises an outburst cylinder. A Z-direction piston is connected with the top of the outburst cylinder, and an X-direction barrel and a Y-direction barrel are connected with the bottom of the outburst cylinder; a first pipeline is connected with the middle of a side wall of the outburst cylinder, and a second pipeline and a third pipeline are connected with the first pipeline in parallel; a first pressure gauge is arranged on the first pipeline; a high-pressure gas tank is connected with the second pipeline; the third pipeline is connected with a gas suction port of a vacuum pump; a Y-direction piston is connected with the Y-direction barrel, and a coal charging opening is formed in the top wall of the Y-direction barrel; an X-direction piston is connected with the X-direction barrel, and an outburst opening is formed in the top wall of the X-direction barrel; a fourth pipeline is connected with the bottom wall of the X-direction barrel. The invention further discloses a test method implemented by the aid of the coal and gas outburst simulation device. The coal and gas outburst simulation device and the test method have the advantages that natural gush procedures of gas prior to outburst can be simulated, influence of the thickness of front coal on outburst can be simulated, and field conditions can be approximated; repeated multiple tests can be carried out after coal samples are charged at one step, and accordingly the test efficiency can be improved.

Description

technical field [0001] The invention relates to a coal and gas outburst simulation device for studying the occurrence law and mechanism of coal mine gas disasters, which is suitable for coal and gas outburst simulation tests under various conditions. Background technique [0002] The coal and gas outburst accident in the underground coal seam of coal mine is a complex dynamic disaster phenomenon caused by the combined effects of in-situ stress, gas pressure and coal physical and mechanical properties, which has always threatened the safe production of coal mines. In order to study the mechanism of coal and gas outburst and provide theoretical support for the control of coal mine gas disasters, people have long been committed to the theoretical and experimental research on the mechanism of coal and gas outburst. As early as 1953, Khodot V V of the former Soviet Union used CO for the first time in the world 2 The coal and outburst-prone coal have successfully realized the sim...

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 魏建平王登科刘勇姚邦华徐向宇秦恒洁
Owner HENAN POLYTECHNIC UNIV
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