Analog system for coal seam mash gas dynamic action

A technology of coal seam gas and simulation system, which is applied in educational tools, teaching models, instruments, etc., can solve the problems that there are not many simulation experiments of coal and gas dynamic action, and there are few research results.

Inactive Publication Date: 2009-04-15
ANHUI UNIV OF SCI & TECH +1
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Problems solved by technology

[0003] So far, there are not many studies on the solid-gas coupling medium separation method for gas-con...

Method used

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  • Analog system for coal seam mash gas dynamic action
  • Analog system for coal seam mash gas dynamic action

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Embodiment Construction

[0018] Coal seam gas dynamic action simulation system includes gas injection system, sample loading system, compaction system and information collection system. The sample loading system includes a cylinder body 1, which is made of corrosion-resistant and high-pressure-resistant materials. In order to reduce the processing difficulty and improve the manufacturability, the cylinder body 1 is designed to be divided into two sections, and the inner wall is roughened to prevent cross-flow. Install the discharge end cover 2, there is a discharge port on the discharge end cover 2, the quick-opening air relief valve 3 is installed on the discharge end cover, and the other section is equipped with a hydraulic plunger 4, a hydraulic cylinder end cover 5, a hydraulic plunger 4, a hydraulic There is a sealing mechanism between the cylinder end covers 5, and a sealing adjustment mechanism is arranged outside the hydraulic cylinder end cover 5, so that the seal can be guaranteed by pressing...

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Abstract

The invention relates to a coalbed gas dynamic effect simulation system. The system comprises a gas injection system, a sample loading system, a compaction system and an information acquisition system; the sample loading system comprises a high pressure cylinder body which is provided with a plurality of information sensors, one end of the high pressure cylinder body is provided with an exhaust valve and the other end is a sealed pressure plunger; a hydraulic oil chamber is arranged in the hydraulic plunger, a gas inlet tube penetrating the plunger is arranged at the middle part of the hydraulic plunger, and the gas inlet tube penetrates the other end cover; the gas injection system consists of a high pressure bottle, a relief valve, a tube valve fitting and the like, ,and supplies gas to the gas inlet tube; the compaction system comprises a hydraulic pumping station which injects oil to the hydraulic oil chamber arranged in the hydraulic plunger and provides oil pressure; and the data acquisition of the sample loading, compaction and gas injection processes is controlled by an information acquisition control system. The simulation system can reproduce migration and outburst processes of the coalbed gas, reproduce stress concentration and stress relief processes of coal rock, and can be applied to other related physical effect experimental studies.

Description

technical field [0001] The invention belongs to a physical simulation test equipment for coal seam gas dynamic action. Background technique [0002] Due to the complexity of the material composition and occurrence conditions of gas in coal, the process of gas adsorption, desorption, diffusion, seepage and outburst in coal is a very complicated process, accompanied by sound, light, electricity, heat, magnetic Equivalent effects; analyze and use the mechanism of these effects, explore and solve technical problems of gas dynamic prevention and control. [0003] So far, there are not many studies on the solid-gas coupling medium separation method for gas-bearing coal bodies, and there are few simulation experiments on the dynamic interaction between coal and gas. In this case, it is particularly important to study the solid-gas coupling medium separation method of gas-bearing coal and develop the corresponding experimental equipment. Contents of the invention [0004] The pu...

Claims

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Application Information

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IPC IPC(8): G09B25/00
Inventor 严家平谢焰李建楼刘宝和刘开鹏
Owner ANHUI UNIV OF SCI & TECH
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