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Pumping-type water-gas absorption coal body deformation test device and pumping-type water-gas absorption coal body deformation test method

A deformation test and pull-out technology, which is applied in the direction of electric/magnetic solid deformation measurement, measurement devices, electromagnetic measurement devices, etc., can solve the lack of operational safety and test accuracy test devices, deformation measurement devices, and the lack of induced coal bodies, etc. problem, to achieve the effect of high test accuracy, safe operation, simple structure and method

Inactive Publication Date: 2016-07-20
ANHUI UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] At present, the existing experimental devices for coal adsorption deformation in China can only be used for pure gas or pure water adsorption, and there is no measurement device for coal deformation induced by simultaneous adsorption of gas and water.
In particular, there is a lack of testing devices that can ensure personnel safety and testing accuracy, so it is necessary to develop a water and gas adsorption coal deformation testing device and method that is safe in operation and high in testing accuracy

Method used

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  • Pumping-type water-gas absorption coal body deformation test device and pumping-type water-gas absorption coal body deformation test method
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  • Pumping-type water-gas absorption coal body deformation test device and pumping-type water-gas absorption coal body deformation test method

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Embodiment Construction

[0029] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments.

[0030] Such as figure 1 , figure 2 As shown, a pumping-out water and gas adsorption coal body deformation test device includes a cylindrical sealed tank, a height adjustment unit, a gas injection unit and a data acquisition unit; coal samples and water are placed in the cylindrical sealed tank, and the The height adjustment unit controls the height of the connecting shaft of the cylindrical sealed tank, the gas injection unit injects gas into the cylindrical sealed tank, and the data acquisition unit passes into the cylindrical sealed tank to monitor the coal sample Collect strain data.

[0031] In this embodiment, the cylindrical sealed tank includes a cavity 1, a sealing nut 2, a cover 3, an opening nut 4, a connecting shaft 5, a horizontal shaft 6, a rope 7, and a coal sample barrel 8. The cavity 1 and The sealing nut 2 is connecte...

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Abstract

The invention relates to the technical field of experimental facilities and discloses a pumping-type water-gas absorption coal body deformation test device and a pumping-type water-gas absorption coal body deformation test method. The device comprises a cylinder sealing tank, a height adjustment unit, a gas injection unit and a data acquisition unit, wherein a coal sample and water are placed in the cylinder sealing tank; the height adjustment unit controls the height of a connection shaft of the cylinder sealing tank; the gas injection unit is communicated with the interior of the cylinder sealing tank and is used for injecting gas into the cylinder sealing tank; the data acquisition unit is communicated with the interior of the cylinder sealing tank and is used for acquiring strain data of the coal sample. The device and the method are capable of realizing deformation test on coal bodies in different regions during a water-gas absorption process and testing deformation of the coal bodies in a wet region after drainage; the device is simple in structure and method, safe to operate and high in test precision.

Description

technical field [0001] The invention relates to the technical field of experimental devices, in particular to a pumping-type water and gas adsorption coal body deformation testing device and method. Background technique [0002] Hydraulic measures are an effective technical approach for deep gas control in coal mines in my country, such as static pressure water injection, dynamic pressure water injection, hydraulic fracturing, hydraulic punching, hydraulic cutting, etc., which have the advantages of obvious control effect and low cost. And it has been applied in most mining areas in our country. [0003] However, hydraulicization measures require injecting large volumes of water into the coal seam and creating pressure relief zones in the coal seam. In this process, it will inevitably lead to the interaction of water, gas and coal. Water enters the coal seam and forcibly opens the coal seam, while the original gas is pushed to the farther coal seam area by the water, so tha...

Claims

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Application Information

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IPC IPC(8): G01N33/22G01B7/16
CPCG01N33/222G01B7/16
Inventor 马衍坤刘泽功张曦刘静刘健蔡峰武宁
Owner ANHUI UNIV OF SCI & TECH
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