Method for coal and gas outburst simulation experiment

A technology of gas outburst and simulation experiments, applied in the experimental field, can solve the problems of inapplicable quantitative relationship research, outdated monitoring equipment and means, and small size of simulated coal samples, so as to reduce coal and gas outburst accidents, facilitate data collection, and structure simple effect

Active Publication Date: 2014-01-22
CHINA COAL TECH ENG GRP CHONGQING RES INST
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Problems solved by technology

Although the above-mentioned coal and gas outburst simulation test device has played a great role in the study of coal and gas outburst mechanism, with the development of coal and gas outburst mechanism, especially the proposal of the mechanism of coal and gas outburst mechanics, the above-menti

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  • Method for coal and gas outburst simulation experiment
  • Method for coal and gas outburst simulation experiment
  • Method for coal and gas outburst simulation experiment

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[0033] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

[0034] like Figure 1-9 As shown, the orientation words such as front, rear, left and right in the present invention only represent the relative positions in the figures, and do not represent the absolute positions of the products.

[0035] The coal and gas outburst simulation device of the present invention is mainly composed of a frame 1, a test bench 2, an outburst box 3, a guide rail 4, a cylinder 5, an upper pressure plate 6, a side pressure plate 7, an upper hydraulic cylinder 8, a side pressure cylinder 9 and other components .

[0036] The frame 1 is a frame body surrounded by a bottom beam, left and right vertical beams and an upper beam installed under the ground. A test bench 2 is installed on the bottom beam, and the upper surface and the bottom surface of the test bench 2 are Flush, the test bench 2 is provided with a guide rail 4, the guide r...

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Abstract

The invention discloses a method for a coal and gas outburst simulation experiment. The method comprises the following steps that a, a simulation device is prepared; b, broken coal is contained in an outburst box, briquette coal pressing is carried out, then vacuumizing treatment is carried out, gas of one barometric pressure is filled into the outburst box after vacuumizing is completed, and then pressurization continues to be carried out until a coal body is completely compacted; c, an end cap on an outburst opening is taken out, an explosion venting device is arranged on the outburst opening, the gas is filled into the outburst box until absorption balance is achieved, then briquette coal is pressurized again until the stress state of a coal layer needing to be simulated is met, finally, coal and gas outburst is stimulated, gas flow is shot by a high-speed camera, and data are collected. The method is reasonable in design, simple in structure and easy to implement, multi-dimensional pressure loading can be achieved, inflation pressure is large, inflation is more even, sealing performance is good, the data are convenient to collect, and an important means is provided for deeply studying the coal and gas outburst mechanical action mechanism and reducing coal and gas outburst accidents.

Description

technical field [0001] The invention relates to an experiment method, in particular to a coal and gas outburst simulation experiment method. Background technique [0002] Coal and gas tushan is a disastrous dynamic phenomenon of coal and gas accompanied by sound and violent energy effects that occurs during underground mining activities in coal mines. A large amount of coal, gas or rock is ejected from the rock mass, and holes of a special shape are formed in the coal mass. [0003] 95% of my country's coal mining is underground, and the geological conditions of coal seams are complex. With the mining depth of about 10-20m per year extending to the deep, coal and gas outburst disasters are becoming more and more serious. From July 2000 to December 2012, a total of 411 coal and gas outburst fatal accidents occurred in my country, with 2506 deaths, which has become a key factor restricting the safe production of coal mines and the healthy development of the coal industry in m...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 胡千庭文光才陈金华王波隆清明张淑同刘延保杨慧明苗法田戴林超
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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