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A coal rock non-linear permeability coefficient testing device and method

A technology of permeability coefficient and testing device, which can be used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., and can solve the problems of lack of theoretical guidance in gas treatment

Inactive Publication Date: 2017-08-29
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Abstract
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Problems solved by technology

[0004] In view of this, in order to solve the problem of lack of theoretical guidance when implementing mine gas control, the present invention provides a coal-rock nonlinear permeability coefficient testing device and method

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  • A coal rock non-linear permeability coefficient testing device and method
  • A coal rock non-linear permeability coefficient testing device and method
  • A coal rock non-linear permeability coefficient testing device and method

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Embodiment Construction

[0068] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0069] Reference numerals in the drawings in the description include:

[0070] The upper sealing block 11 , the top cover 12 , the side chamber valve 13 , the bottom tray 14 , the flange 15 , the connecting gas outlet 16 , the groove 17 , the sealing cavity 18 , the sieve hole 19 , and the gas chamber 20 .

[0071] like figure 1 , figure 2 The shown device for testing the nonlinear permeability coefficient of coal and rock includes a coal sample sealing device, a pressure control system at the inlet end, a pressure control system at the outlet end, and a vacuum piping system. The coal sample sealing device includes a constant temperature tank and a gas chamber 20. Bath or constant temperature air bath. The air chamber 20 is installed in the constant temperature tank, and the air chamber 20 is installed with a sealing cavity 18 which is ...

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Abstract

The invention belongs to the technical field of coal mine safety, and relates to a coal rock non-linear permeability coefficient testing device and method. The device includes a coal sample sealer, an inlet end pressure control system, an outlet end pressure control system and a vacuum pipeline system. The coal sample sealer comprises a thermostatic bath and a gas chamber. The gas chamber is disposed in the thermostatic bath. A seal cavity is mounted in the gas chamber. A hollow cylindric steel bar penetrates the middle of the seal cavity. The lower part of the steel bar, which protrudes out of the seal cavity, is adopted as a connection gas outlet end. A bent top cover is hermetically mounted on the seal cavity. The annular surface of the top cover is evenly provided with a plurality of sieve holes. An upper seal check block is disposed on the top cover. The gas chamber has a cylindric structure. The side surface of the gas chamber is provided with a side chamber valve. The inlet end pressure control system and the vacuum pipeline system are connected to the side chamber valve. The outlet end pressure control system is communicated with the connection gas outlet end. A problem that mine gas treatment lacks theoretical directions is overcome. The basis for formulating a reasonable drainage and mining scheme for mines is provided.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety, and relates to a non-linear permeability coefficient testing device and method of coal rock. Background technique [0002] Coal occupies an absolutely dominant position in my country's one-time energy structure, and the proportion was as high as 90% in the 1950s. It is estimated that by 2015, my country's coal production will reach 3.9 billion tons. However, the development of my country's coal industry is facing severe challenges under the new situation. The frequent occurrence of major gas disasters has become the most serious restrictive factor for coal mine safety production. The occurrence conditions of coal seams in my country are complex, with high gas mines and coal and gas outburst mines accounting for about one-third. In addition, gas (coalbed methane) is a kind of clean and efficient energy. Under the environment of high international oil prices and unprecedented pressure o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 程波邹银辉张志刚向衍斌王建张林良李大勇程建圣孙炳兴李文哲徐腾飞冀超辉黄光利刘俊杜文波
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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