A method for predicting and analyzing hazards of rockburst hazards in mines with hard roofs

Abstract

The invention discloses a hard roof mine impact ground pressure hazard risk prediction analysis method. The hard roof mine impact ground pressure hazard risk prediction analysis method comprises substituting obtained mechanical parameters into an energy release equation based on an occurred impact ground pressure hazard to obtain the energy increase degree REC; performing the quantitative characterization on the energy absorption degree AEC according to six divided supporting schemes; dividing specific mine impact ground pressure hazard risk prediction analysis frameworks according to the degree of the influence on mining, wherein the formula of the impact ground pressure hazard potential RDP is as follow; calculating the impact ground pressure hazard potential produced in the mining process of the high press area in the process of the newly occurred hard roof breaking and performing comparison on the impact ground pressure hazard potential and the established impact ground pressure hazard risk prediction analysis frameworks to determine the hazard degree of the impact ground pressure. According to the hard roof mine impact ground pressure hazard risk prediction analysis method, the scientific quantification is performed on the impact ground pressure hazard potential induced by the hard roof breaking in a mine, the calculation method is simple, the required mechanical parameters are easy to obtain, and the impact ground pressure hazard risk of the hard roof mine is simply and conveniently determined.

Description

technical field [0001] The invention relates to the field of rock burst disasters in coal mines, in particular to a method for predicting and analyzing the risk of rock burst disasters in mines with hard roofs. Background technique [0002] Rockburst in coal mine refers to the dynamic phenomenon of sudden and violent destruction of the rock mass around the shaft or working face due to the instantaneous release of elastic deformation energy, often accompanied by coal and rock mass throwing, loud noise and air waves. It often causes damage to the support equipment in the mining space and deformation of the mining space. In serious cases, it causes casualties and damage to the shaft, and even causes the surface to subside and cause local earthquakes. It is very destructive and is one of the major disasters in coal mines. One, it mainly occurs during the coal mining process. [0003] Looking at the rock burst in coal mines, it can be seen that the phenomenon of rock burst has t...

AI Technical Summary

Problems solved by technology

The "Research on Rock Burst Prediction Based on Chaotic Time Series Prediction Method" proposed by the current technology uses mathematical methods to predict the change trend of the detected data, but it cannot achieve real-time monitoring; the stress increment prediction method of rock burst, although it can do Quantitative prediction, but the calculation of parameters is relatively complicated, and corresponding weights should be assigned to different parameters according to different situations, which will have a certain impact on the prediction effect; the method of pattern recognition can predict rock burst, However, the extracted feature parameters, weights, and thresholds have a great influence on the prediction system, but the determination of these parameters is not unique, and the disaster prediction cannot be scientifically quantified.

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