Experiment device for detecting influence of moisture on methane desorption rule

A technology of desorption rules and experimental devices, applied in the direction of material inspection products, fuel oil testing, etc., can solve the lack of quantitative research and other problems

Inactive Publication Date: 2014-02-05
HENAN POLYTECHNIC UNIV
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  • Abstract
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Problems solved by technology

Unfortunately, for a long time, researchers have focused on the research of water injection technology and wate

Method used

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  • Experiment device for detecting influence of moisture on methane desorption rule

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Embodiment Construction

[0019] Hereinafter, the invention will now be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0020] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0021] Reference attached figure 1 , the present invention provides an experimental device for the influence of moisture on the gas desorption law. The experimental device is composed of five systems: vacuum degassing, constant temperature, adsorption balance, coal sample water injection and desorption measurement. The details of each system are as follows:

[0022] (1) Vac...

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Abstract

The invention relates to an experiment device for detecting the influence of moisture on the methane desorption rule. The experiment device is composed of five systems of vacuum degassing, constant temperature, adsorption balance, coal sample water injection and desorption determination, namely a vacuum degassing unit (1), a constant temperature unit (2), an adsorption balance unit (3), a coal sample water injection unit(4) and a desorption measurement control unit (5). The experiment device provided by the invention is widely applied to the aspects of improving coal gas drawing rate and drawing effect and the like in high gassy mines and coal and gas outburst mines.

Description

technical field [0001] The invention relates to an experimental device for the influence of moisture on the law of gas desorption, and belongs to the technical field of gas drainage experiments in coal measure formations. Background technique [0002] Production practice shows that the mechanism of coal water injection to prevent outburst is mainly reflected in two aspects. One is that water injection can change the mechanical properties of coal, reduce the elasticity and strength of coal body, increase plasticity, and make the high stress area in front of the roadway to The deep transfer of the coal body reduces the stress concentration factor; on the other hand, after the coal body is wet, the air permeability can be reduced by hundreds of times, and the water has an obvious hindering effect on the gas desorption, which greatly reduces the initial gas gushing out of the coal. Speed ​​and gas outflow. Coal seam water injection has many advantages such as small construction...

Claims

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Application Information

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IPC IPC(8): G01N33/22
Inventor 陈立伟裴蓓刘军袁军伟王林陈向军
Owner HENAN POLYTECHNIC UNIV
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