Verisimilitude briquette coal and gas outburst simulation test device and method

Abstract

The invention provides a verisimilitude briquette coal and gas outburst simulation test device and method. Under the condition of the stress and gas pressure effects being accompanied by top plate motion, energy transfer and gas continuous supply, the coal body has three mechanics zones, receives the top plate effect and achieves the gas zoning distribution features, the coal and gas outburst evolution process in front of the work surface is really simulated. The device consists of a support frame, a cavity, a cover plate, a stress loading system, a gas injection system, a parameter recording system and a sealing opening. The three-zone stress is loaded and simulated through an oil cylinder in a zoning way; a cover plate with different thicknesses and rigidities simulates the top plate; the gas is sealed through a sealing strip between the cover plate and the cavity, so that the gas can maintain the zoned distribution; the coal wall delay outburst is exposed through screen net opening sealing simulation; the sealed sealing opening is suddenly opened to simulate the rock cross-cut coal uncovering outburst, and paraffin melting or hole drilling is used for simulating the digging outburst. The device and the method have the advantages that the coal and gas outburst environment, the influence factor, the boundary condition and the evolution generation process can be really simulated; the roadway-side stress and gas coupling effect and the evolution process can be simulated.

Description

technical field [0001] The invention relates to a coal and gas outburst simulation test device and method, in particular to a realistic briquette and gas outburst simulation test device and method. Background technique [0002] Coal (rock) and gas (methane or carbon dioxide) outburst, coal and gas extrusion, rock burst and other coal-rock dynamic disasters are the main disasters in high gas and deep coal mining. With the increase of mining depth and mining intensity, coal-rock dynamic disasters such as mine gas outburst and rock burst have become increasingly serious and complex, and the risk of disasters has increased significantly. At the same time, some mines that had no dynamic disasters or obvious signs are now also Gradually, it seriously threatens the life safety of underground workers and the normal production of mines. [0003] At home and abroad, a lot of research has been done on the mechanism, influencing factors, occurrence rules, prediction and prevention of p...

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The present invention aims at the demand and the existing problems in the prior art, and provides a realistic briquette and gas outburst simulation test device and method to solve the problem

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