Detection evaluation method for microearthquake multi-dimensional information integration area of impact danger zone

Abstract

The invention discloses a detection evaluation method for a microearthquake multi-dimensional information integration area of an impact danger zone. The method comprises the following steps: (1) space coordinates rotation and classifying screening of mine earthquake data are performed; (2) a microearthquake multi-dimensional information detection evaluation index system is established; (3) a space statistic slippage model is created; (4) a microearthquake multi-dimensional information integration detection evaluation index value W is calculated according to the following formula; and (5) a danger class and control countermeasures corresponding to the danger class are determined according to the microearthquake multi-dimensional information integration detection evaluation index value W; and the larger the microearthquake multi-dimensional information integration detection evaluation index value W is, the higher the danger class is. The method integrally considers three elements of the microearthquake space time magnitude, quantitatively describes the impact danger degree, can reflect an impact danger area and the danger class in the current time period in real time, can guide a site to take corresponding control countermeasures, and is extremely high in prediction effect, high in operability and high in arithmetic speed; and physical significance of the established detection evaluation index system and an integration index is definite.

Description

technical field [0001] The invention relates to a detection and evaluation method for a shock hazard zone, in particular to a microseismic multi-dimensional information comprehensive region detection and evaluation method for a shock hazard zone. Background technique [0002] At present, the evaluation methods of mine shock hazard areas mainly include: laboratory shock tendency determination, comprehensive index method, numerical simulation method, overlying strata space structure theory, drilling cuttings method, stress monitoring method, electromagnetic radiation method, acoustic emission method and microseismic method Wait. Among them, the laboratory impact tendency measurement, comprehensive index method, numerical simulation method and overlying strata space structure theory are mainly to predict the risk of strong mine earthquake or rock burst in the mining face. If the risk is high, corresponding measures should be taken monitoring, early warning and prevention measu...

AI Technical Summary

Problems solved by technology

In particular, the CT detection and evaluation technology proposed based on the microseismic monitoring system in recent years has solved the problem of detection and evaluation of shock hazard areas well. Its only disadvantage is that the inversion calculation cycle is long

In addition, the spatial evolution of microseismic activity based on the distribution of microseismic events only considers the factor of microseismic frequency, and the spatial evolution of microseismic energy and stress contour distribution based on the distribution of microseismic events only considers the factor of microseismic intensity

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