Gaseous coal friction-adsorption/desorption test device and test method

A test device and test method technology, applied in the field of mining and rock mechanics, can solve the problem that the coupling effect of gas adsorption and desorption characteristics cannot be truly simulated

Pending Publication Date: 2019-11-29
CHINA UNIV OF MINING & TECH (BEIJING)
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AI Technical Summary

Problems solved by technology

At present, there is still a lack of experimental devices that can effectively describe the "friction-adsorption-desorption" law of gas-containing coal, and it is impossible to truly simulate the coupling effect of gas-containing coal in the friction-sliding process and gas adsorption-desorption characteristics

Method used

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  • Gaseous coal friction-adsorption/desorption test device and test method
  • Gaseous coal friction-adsorption/desorption test device and test method
  • Gaseous coal friction-adsorption/desorption test device and test method

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Embodiment Construction

[0030] Such as figure 1 and figure 2 As shown, a gas-containing coal friction-adsorption / desorption test device includes a gas-containing coal friction device system, a gas injection / pressurization pipeline, and a real-time data acquisition and processing system; its main part is a gas-containing coal friction device system 1, The interior includes a first chamber 3 and a second chamber 5. The first chamber 3 is located on the front side of the system 1, and is equipped with a hydraulic cylinder 4 for applying axial pressure. The hydraulic cylinder is externally connected to an axial pressure pipeline hydraulic pump 1501. The chamber 5 is located on the rear side of the system 1, and the outside of the chamber 5 is equipped with a constant temperature box 2. The second chamber 5 is a closed space when the valve is fully closed. Gas coal body 9, wherein the upper clamp 801 is slidable, the lower clamp 802 is fixed, and the upper and lower clamps 8 are sealed and wrapped by th...

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Abstract

The invention discloses a gaseous coal friction-adsorption/desorption test device and test method. The device mainly comprises a gaseous coal friction device system, a gas injection/pressurization pipeline and a real-time data acquisition system. The friction device system and the gas injection/pressurization pipeline can realize a friction sliding action of coal and coupling of adsorption/desorption; and meanwhile, the real-time data acquisition system is used to monitor and acquire data of a friction sliding state and adsorption and desorption features. The gaseous coal friction-adsorption/desorption test device can well describe the adsorption and desorption features of dynamic damage to a coal sample under a tectonic stress environment, which is closer to an actual situation, so that afoundation is laid to researching a forming mechanism of gas expansion energy which induces a coal mine gas disaster and a gaseous coal friction sliding instability inducing and outburst mechanism.

Description

technical field [0001] The invention belongs to the field of mining and rock mechanics, and in particular relates to a gas-containing coal friction-adsorption / desorption test device and test method. Background technique [0002] In the field of geomechanics, extensive studies have been conducted on the fault slip induced by earthquakes and the shear slip of fractures produced by hydraulic fracturing based on tribological theory; Whether it is a large-scale fault or a small-scale discontinuous coal body that is cut by through cracks and has a tendency to slip, these are high-incidence areas for coal and gas outburst accidents. The friction effect has no effect on the destruction of gas-containing coal bodies. The stability characteristics also have an important influence. The frictional slip stability analysis of gas-bearing coal is a very important research topic for the prevention and control of coal and gas outburst. [0003] The physical parameters of gas-bearing coal ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/04G01N7/14G01N1/32
CPCG01N1/32G01N7/04G01N7/14
Inventor 周爱桃胡嘉英王凯张蒙
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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