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Comprehensive index evaluating method for rock burst

A technology of rock impact and comprehensive index, applied in mining equipment, mining equipment, earthwork drilling, etc., can solve the problems of coal and rock mass vibration damage, throwing into the well, making strong noise, casualties, etc., to improve the safety level Effect

Inactive Publication Date: 2013-10-23
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0002] With the gradual increase of mine mining depth and mining range in my country, coal-rock dynamic disasters represented by rock bursts are becoming more and more serious. This dynamic disaster will cause the elastic energy accumulated in coal-rock mass to suddenly, sharply and Released in the form of coal and rock, causing vibration damage to the coal and rock mass, the power throws the coal and rock to the shaft, making a strong sound, causing damage to supports and equipment, shafts, and casualties. Know in advance when and where it will happen

Method used

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  • Comprehensive index evaluating method for rock burst
  • Comprehensive index evaluating method for rock burst
  • Comprehensive index evaluating method for rock burst

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Embodiment Construction

[0019] Below in conjunction with example the present invention will be further described.

[0020] A comprehensive index evaluation method of rock burst, comprising the following steps:

[0021] (1) Analyze the types of geological impact factors W in the impact factors of rock burst gi , to determine the maximum risk index R of various types of geological influence factors mgi and the actual risk index R gi , to calculate the rock burst risk index of geological factors W t 1 = Σ R gi R mgi ;

[0022] (2) Analyze the types of mining impact factors W in the impact factors of rock burst mj , to determine the maximum risk index R of various mining influencing factors mmj and the actual risk index R mj , to calculate the rock burst risk index of mining-related factors ...

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Abstract

The invention discloses a comprehensive index evaluating method for rock burst. The method comprises the following steps of evaluating weights to rock burst by geological and mining factors in a mining area through comprehensive analysis; respectively calculating danger indexes of the weights, and taking the maximum value as the final danger comprehensive index for rock burst; and thus determining the danger class, state and preventing policy for rock burst in the mining area. The comprehensive index evaluating method for rock burst disclosed by the invention is an advanced evaluating and predicting method which is simple and easy to operate and use. The danger level and class for rock burst can be determined by just analyzing the geological and mining factors in the mining area, and then, related monitoring and preventing preparation for rock burst can be made in advance according to the predetermined preventing policy, so that the safety level of mine production is enhanced.

Description

technical field [0001] The invention relates to a comprehensive index evaluation method of rock burst, which belongs to coal mining and coal mine safety technology. Background technique [0002] With the gradual increase of mine mining depth and mining range in my country, coal-rock dynamic disasters represented by rock bursts are becoming more and more serious. This dynamic disaster will cause the elastic energy accumulated in coal-rock mass to suddenly, sharply and Released in the form of coal and rock, causing vibration damage to the coal and rock mass, the power throws the coal and rock to the shaft, making a strong sound, causing damage to supports and equipment, shafts, and casualties. Know in advance when and where it will happen. At present, the research on rock burst mainly focuses on three research aspects, one is the research on the mechanism of rock burst (rockburst); the other is the research on the risk assessment, monitoring and forecasting technology of rock b...

Claims

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Application Information

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IPC IPC(8): E21F17/00
Inventor 窦林名牟宗龙贺虎温颖远易恩兵
Owner CHINA UNIV OF MINING & TECH
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