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Mine compound dynamic disaster simulation test method considering roof influence

A dynamic disaster simulation test technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problem of the infeasibility of compound dynamic disasters, and achieve simple and easy test operation and device structure Sophisticated, low-experimental effects

Inactive Publication Date: 2019-09-20
田成林
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  • Application Information

AI Technical Summary

Problems solved by technology

Considering the huge destructiveness and hazards of compound dynamic disasters, it is not feasible to artificially induce compound dynamic disasters on site

Method used

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  • Mine compound dynamic disaster simulation test method considering roof influence
  • Mine compound dynamic disaster simulation test method considering roof influence
  • Mine compound dynamic disaster simulation test method considering roof influence

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0059] Such as Figure 1-Figure 9 As shown, a mine compound dynamic disaster simulation test method considering the influence of the roof is characterized in that it includes:

[0060] The first step, test piece preparation

[0061] Prepare a coal-rock composite specimen 23 based on the thickness ratio of the roof, floor, and coal seam, and paste strain gauges on the coal and rock surfaces respectively;

[0062] The second step, test piece installation and monitoring equipment installation and debugging

[0063] Put the prepared coal-rock combination test piece 23 into the high-pressure resistant sealed cavity, connect the glass sintered connector 11 through the lead wire output end 8, and then connect to the external strain gauge; connect and debug the components of the output end 10 in sequence; Install an acoustic emission probe at the outer surfa...

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Abstract

The invention discloses a mine compound dynamic disaster simulation test method considering a roof influence. The method comprises the following steps of installing a prepared coal and rock combination body test piece which is pasted with a strain gauge into a high pressure resistance sealing cavity; completing installation and debugging of other equipment and starting the equipment; vacuumizing, carrying out air inflation, loading and monitoring air pressure of the cavity, a respective strain of a coal and rock body and an acoustic emission characteristic in real time; and at the moment when a test piece is damaged, relieving the pressure through an explosion-proof high-speed pneumatic valve, and observing and analyzing a dynamic appearance characteristic in a catastrophe process. The invention simultaneously provides a mine compound dynamic disaster simulation test system considering the roof influence. In the invention, all stages of mine compound disasters and catastrophes can be systematically monitored and data support is provided for accurate analysis of each stage of the catastrophe. The method has important theoretical significance and an engineering value, and also has positive significance for prediction and prevention of the mine compound dynamic disasters, such as rock burst-coal induced by deep mining, outburst of a gas and the like.

Description

technical field [0001] The invention belongs to the technical field of indoor test equipment, and in particular relates to a mine compound dynamic disaster simulation test method considering the influence of the roof. Background technique [0002] Deep coal mining is increasingly threatened by high ground stress, high temperature, high karst water, etc. High-intensity mining (disturbance) has significantly increased the probability of complex coal-rock dynamic disasters in some high-gas mines. Such dynamic disasters are both prominent and impactful. Part of the characteristics of ground pressure, the two dynamic disasters coexist, influence each other, and compound each other. At the same time, the deep composite coal-rock dynamic disaster is a complex mechanical process. The interweaving of various factors in the process of disaster occurrence may lead to mutual inducement, mutual reinforcement, or "resonance" in the process of accident breeding, occurrence and development....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0003G01N2203/0019G01N2203/0075G01N2203/0232G01N2203/0641G01N2203/0647G01N2203/0658G01N2203/0676G01N2203/0682
Inventor 田成林胡千庭梁运培孙海涛赵博杨雪林杨硕
Owner 田成林
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