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Coal mine downhole country rock slight shock detection method

A detection method and microseismic technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems such as lack of microseismic monitoring methods

Inactive Publication Date: 2012-06-20
DATONG COAL MINE GRP
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of lack of microseismic monitoring method for geological conditions of hard roof and floor and hard coal seam, the present invention provides a method for microseismic detection of surrounding rock in coal mine

Method used

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Embodiment Construction

[0019] The microseismic detection method for surrounding rock in coal mines comprises the following steps,

[0020] (1) Set up the equipment used for monitoring; mainly including central computer, central signal data receiver, digital signal recorder with signal monitoring and analysis module, microseismic probe with vibration recording performance of 1Hz~600Hz and embedded signal transmission module And the transmission line and power supply between them; the arrangement position of the microseismic probe meets the following conditions:

[0021] The microseismic probes are evenly distributed in the tunnels or chambers around the mining area to be tested, forming a three-dimensional network;

[0022] ② Avoid the three-dimensional coordinate points of three or more microseismic probe positions from forming a straight line, and prevent the three-dimensional coordinate points of all microseismic probe positions from forming a quadratic curve;

[0023] Ensure that the distanc...

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Abstract

The invention particularly provides a coal mine downhole country rock slight shock detection method, and solves the problem that no method for monitoring slight shock under the geological conditions of a hard top bottom plate and a hard coal bed exists. The coal mine downhole country rock slight shock detection method includes steps as follows: erecting equipment used for monitoring, collecting data, summarizing, analyzing and monitoring in real time, analyzing abnormal parameter conditions, and early warning possible rock burst times and positions. The method not only can solve the difficulty in rock bursts during coal mining and ensure the success and safe process of mining, but also has positive and effective directive function in the rock burst prevention work during the mining process in future.

Description

technical field [0001] The invention relates to a vibration monitoring method in a coal mine, in particular to a microseismic detection method for surrounding rocks in a coal mine. Background technique [0002] Shock mine pressure is a kind of mine pressure that suddenly destroys the surrounding rock (coal or rock) underground, causing violent vibration and accompanied by a large number of coal (rock) blocks thrown out. It is a dynamic disaster that seriously threatens the safe production of coal mines. The power generated by the impact throws the coal and rock to the roadway, and at the same time makes a strong sound, causing the vibration of the coal and rock mass and the damage of the coal and rock mass, the damage of the support and equipment, casualties, and the collapse and damage of some roadways. The impact mine pressure will also cause or may cause other mine disasters, especially gas and coal dust explosions, fires and floods, etc., which will interfere with the ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 吴永平王琦闫志义王玉锦高宇平刘胜田利军王宏卢国梁张勇赵军李有春陈涛白兴平刘锦荣张效春胡银如王洪庆王存权邢彦文周建峰
Owner DATONG COAL MINE GRP
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