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Comprehensive early-warning observation method for coal mine rock burst

A technology for rock burst and coal mines, which is applied in mining equipment, mining equipment, earthwork drilling, etc., can solve the problems of low economic benefit of mining, major disasters and accidents are not fundamentally controlled, and avoid dangerous accidents of rock burst. Effect

Inactive Publication Date: 2012-07-18
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This is one of the important reasons why coal mine rock burst accidents are frequent, especially major disaster accidents have not been fundamentally controlled, and the economic benefits of mining are low.

Method used

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  • Comprehensive early-warning observation method for coal mine rock burst
  • Comprehensive early-warning observation method for coal mine rock burst
  • Comprehensive early-warning observation method for coal mine rock burst

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Experimental program
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Embodiment Construction

[0017] The implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0018] Step 1: Obtain the range of dynamic stress field

[0019] Such as figure 1 As shown, in the mining process of rock burst coal seam working face, a roof dynamic instrument is arranged at intervals of 10-20 meters along the advancing direction of the working face in the mining roadway to continuously observe the roof sinking speed, so as to obtain the roof subsidence rate. The location where the sinking velocity changes suddenly; then gradually reduce the interval distance of the roof dynamic instrument at this location, and continue to observe the roof sinking velocity continuously until it approaches the accurate leading pressure range value, which is determined as the range of the roof dynamic stress field.

[0020] Step 2: Human intervention to determine the disturbance range

[0021] Such as figure 2 As shown, in the mining roadway, starting...

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Abstract

The invention discloses a comprehensive early-warning observation method for coal mine rock burst. The method includes the steps: firstly, obtaining the range of a high stress field of a rock burst coal bed; secondly, manually intervening and observing the disturbance range; and finally, performing all-dimensional dynamic monitoring. Comprehensive monitoring is realized by closely associating overburden rock movement damage of a mining face with the size and distribution of the stress field, so that the risk of rock burst is forecast, warning measures are timely taken, and rock burst accidents are avoided.

Description

technical field [0001] The invention belongs to the technical field of coal mining. Background technique [0002] Rock burst is one of the most serious natural disasters in coal mines worldwide. The coal seams and rock formations in most mines in my country have different degrees of impact tendency. At a certain critical depth, the impact of coal and rock is extremely serious, especially as the mining depth of my country's coal mines continues to increase at a depth of about 20m per year. It has become more and more serious and has become one of the major catastrophic accidents restricting mine production and safety in my country. Although scholars at home and abroad have made important progress in the research on the mechanism of rock burst, monitoring methods and control technology, it is far from fundamentally solving the problem of its effective prediction and prevention. Most of the coal mines in my country were built in the 1950s and 1960s. With the passage of time an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/18
Inventor 潘立友
Owner SHANDONG UNIV OF SCI & TECH
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