Coal-rock adsorption and desorption deformation visualization testing system and method under combined action of water and gas

A co-action, adsorption and desorption technology, applied in the direction of fuel oil testing, measuring devices, instruments, etc., can solve problems such as the inability to overcome the interfacial tension to enter the small hole and micropore system, the inability to reflect the law of influence, and the inability to restore the influence of adsorption and desorption deformation characteristics, etc. , to achieve the effect of simple test method, wide practicability and simple structure

Inactive Publication Date: 2019-03-15
SHIJIAZHUANG TIEDAO UNIV
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Problems solved by technology

Due to the influence of pore interfacial tension, liquid water cannot overcome the interfacial tension and enter the small pores and micropore systems. Therefore, the method of injecting liquid water cannot reflect the influence of internal m

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  • Coal-rock adsorption and desorption deformation visualization testing system and method under combined action of water and gas
  • Coal-rock adsorption and desorption deformation visualization testing system and method under combined action of water and gas
  • Coal-rock adsorption and desorption deformation visualization testing system and method under combined action of water and gas

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] This embodiment relates to a visual test system for coal rock adsorption and desorption deformation under the joint action of water and gas, such as figure 1 As shown, it includes a test tank body with a sealed cavity 1, and an air supply mechanism for inflating the sealed cavity 1 so that the coal sample 2 placed in the sealed cavity 1 undergoes deformation and strain. The coal rock adsorption and desorption deformation visualization test system under the joint action of water and gas also includes an industrial high-speed camera 3 for capturing images of the deformation and strain of the coal sample 2, and a computer electrically connected to the industrial high-speed camera 3 v...

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Abstract

The invention provides a coal-rock adsorption and desorption deformation visualization testing system and method under the combined action of water and gas. The system comprises a testing tank provided with a sealing cavity and a gas supply mechanism for inflating the sealing cavity. The system also comprises an industrial high speed camera for carrying out image shooting on the deformation strainof a coal sample, and the gas supply mechanism comprises a methane gas supply mechanism and a vapor supply mechanism which are connected with the sealing cavity respectively so that deformation strain can be performed on the coal sample under the coexisting condition of water and methane. According to the coal-rock adsorption and desorption deformation visualization testing system under the combined action of water and gas provided by the invention, vapor is introduced into the sealing cavity, and then water adsorption treatment can be carried out on the coal sample in advance, the testing for a gas adsorption and desorption deformation characteristic can be carried out, a gas adsorption and desorption deformation characteristic evolution law including a coal body under the influence of water can be reflected, and a gas adsorption and desorption deformation mechanism of an in situ coal reservoir coal body can be developed more deeply.

Description

technical field [0001] The invention relates to the technical field of coal and rock experiments, in particular to a visual test system for coal rock adsorption and desorption deformation under the joint action of water and gas. The invention also relates to a visual test method for coal rock adsorption and desorption deformation under the joint action of water and gas. Background technique [0002] Coalbed methane (also known as coalbed methane) is a form of methane (CH 4 )-based gas mixture. Due to the strong diffusivity and explosive properties of methane, gas has become an important factor leading to mine disasters such as coal and gas outbursts and gas explosions. At the same time, methane gas is a kind of greenhouse gas, and its greenhouse effect is about 20 times that of carbon dioxide with the same mass. However, compared with coal, gas has the advantages of high combustion calorific value, environmental protection and no pollution, and is currently recognized as ...

Claims

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Application Information

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IPC IPC(8): G01N33/22G01N7/04
CPCG01N7/04G01N33/222
Inventor 陈明义纪云飞郭乃有李浩然张荣张先萌冯丹杨亚璞
Owner SHIJIAZHUANG TIEDAO UNIV
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