Impact ground pressure split source comprehensive early-warning method of coal mine

Abstract

The invention discloses an impact ground pressure split source comprehensive early-warning method of a coal mine which is capable of carrying out split source monitoring early warning by aiming at different load sources of induced impact ground pressure from different space ranges. The method comprises the steps of: installing a microquake monitoring system, a rock noise monitoring system and a mining-induced stress on-line monitoring system; respectively setting the warning threshold value of each monitoring system; collecting and analyzing the monitoring result data of each monitoring system; respectively calculating the weight value occupied by each monitoring system according to the relative importance degree of each monitoring system in the impact ground pressure early warning and the danger level corresponding to the monitoring result data of each monitoring system; comprehensively calculating the monitoring result data of each monitoring system and the weight value of the corresponding monitoring system to obtain the comprehensive early-warning result data; and judging whether the comprehensive early-warning result data exceeds the preset impact ground pressure damager level or not, if so, carrying out the warning, and if not, avoiding the warning. The method has the advantages that missing warning and error warning can be avoided, the operability is high, and in addition, labor and material sources can be saved.

Description

technical field [0001] The invention relates to a monitoring and early warning method for rock burst, in particular to a separate source comprehensive early warning method for coal mine rock burst that monitors the load source that induces rock burst. Background technique [0002] Rockburst is a dynamic phenomenon characterized by sudden, sharp and violent damage caused by the instantaneous release of the elastic deformation of the coal and rock mass around the mine shaft or stope. Due to disasters and energy structure adjustments in foreign developed countries, rockburst mines have been closed one after another. [0003] The number of rock burst mines in my country has grown from 32 in 1985 to more than 130 now, distributed in more than 20 provinces (municipalities and autonomous regions). According to the domestic and foreign statistical analysis on the law of rock burst occurrence, the occurrence of rock burst disasters shows a non-linear growth relationship with the inc...

AI Technical Summary

Problems solved by technology

[0005] (1) The current monitoring and early warning methods for rock burst are mainly to monitor the microseismic events that are precursors of rock burst or the occurrence regularity of rock burst events with small energy. From the perspective of the mechanism of occurrence, the monitoring and early warning method is determined by taking the source of the load that induces rock burst as the monitoring target

[0006] (2) The current monitoring and early warning methods for rock burst do not consider the diversity of load sources that induce rock burst, nor do they take into account the differences in the distribution of these load sources in space and scale, and simply propose a comprehensive monitoring method for rock burst, resulting in In view of the lack of pertinence of monitoring equipment, methods emerge in endlessly, it is difficult to choose, or the same type of monitoring equipment is arranged in parallel and repeatedly, which not only produces blind spots, missed reports, and false positives, but also increases the burden of manpower and financial resources.

[0007] (3) The monitoring principles of different monitoring systems are different, and the monitoring objects and effective accuracy ranges are also different. The final early warning results are often contradictory, and it is difficult to guide on-site emergency rescue and disaster avoidance decisions

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