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Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state

A gas seepage, real-time dynamic technology, applied in measurement devices, fuel testing, instruments, etc., can solve problems such as inaccessibility to gas drainage

Inactive Publication Date: 2017-01-25
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the real-time dynamic test devices and methods for gas seepage and coal damage and deformation under the relevant negative pressure state are difficult to approach the actual gas drainage situation, and cannot provide a theoretical basis for the formulation of gas drainage optimization measures

Method used

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  • Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state
  • Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state
  • Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state

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specific Embodiment

[0034] like Figure 1 to Figure 4 As shown, the real-time dynamic test device and method for gas seepage and coal damage and deformation under negative pressure include a gas seepage experimental system, a stress loading experimental system, a real-time observation system for coal damage, and a negative pressure control system.

[0035] The gas seepage test system includes a gas cylinder, a gas delivery pipeline, a coal sample tank and a flow meter. The gas delivery pipeline is connected with the gas cylinder, coal sample tank, flow meter and negative pressure control device.

[0036] The stress loading experiment system is composed of an axial pressure loading device and a confining pressure loading system. Axial pressure loading is realized by a press, and confining pressure loading is realized by a booster pump.

[0037] The coal body damage real-time observation system consists of a protection cylinder, a miniature camera, and a miniature strong light. The top cover of t...

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Abstract

The invention discloses a device and method for real-time dynamic testing on gas seepage and coal damage deformation in a negative pressure state. The device comprises a gas seepage experiment system, a stress loading experiment system, a coal damage real-time observation system, a negative pressure control system and a coal deformation testing system, wherein the gas seepage experiment system comprises a gas cylinder and a coal sample tank, the gas cylinder and the negative pressure control system are connected with the coal sample tank respectively through a gas delivery pipe, and a flow meter is arranged on the gas delivery pipe through which the negative pressure control system is connected with the coal sample tank; and the stress loading experiment system comprises an axial pressure loading device and a confining pressure loading system, the axial pressure loading device comprises a pressing machine, the confining pressure loading system comprises a confining pressure pump, and a confining pressure control instrument is arranged on the confining pressure pump. By researching real-time change of gas seepage and coal damage under negative pressure conditions, the gas extraction is optimized, so that the gas extraction is more similar to actual gas extraction, and a theoretical basis is provided for establishing gas extraction and optimization measures.

Description

technical field [0001] The invention relates to a gas drainage technology, in particular to a real-time dynamic test device and method for gas seepage and coal body damage and deformation under negative pressure. Background technique [0002] At present, one of the most effective means of gas disaster control is gas drainage, and an important feature of gas drainage is negative pressure. Therefore, in order to be closer to the actual gas drainage situation, it is of great significance to study the real-time changes of gas seepage and coal damage under negative pressure conditions for the optimization of gas drainage. [0003] At present, the real-time dynamic test devices and methods for gas seepage and coal damage and deformation under negative pressure conditions are difficult to approach the actual gas drainage conditions, and cannot provide a theoretical basis for the formulation of gas drainage optimization measures. Contents of the invention [0004] The purpose of ...

Claims

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Application Information

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IPC IPC(8): G01N33/22
CPCG01N33/222G01N33/225
Inventor 李祥春杨春丽聂百胜李安金殷鹏
Owner CHINA UNIV OF MINING & TECH (BEIJING)