基于微震监测及应力场分析的冲击地压预测方法

PREDICTION METHOD OF ROCK BURST BASED ON MICROSEISMIC MONITORING AND STRESS FIELD ANALYSIS

主要对国内外冲击地压发生情况以及对冲击地压的监测发展情况进行了总结和分析，发现随着矿山开采深度的增加，冲击地压活动越来越频繁，发生的范围也越来越广，但是目前仍没有有效的监测与分析方法能够对冲击地压的发生进行预测预报。为了能够对冲击地压发生实现预测预报，引入地球物理学方法，建立矿山微震监测分析系统。将矿山微震监测系统监测到的矿山微震活动信息，通过网络传输，实现与数值分析系统之间的数据交换：利用微震活动信息修改数值模型的单元信息；借助大规模科学计算，分析开采造成采场以及巷道围岩内部岩体的应力积累、应力阴影和应力迁移过程，进而实现对矿山冲击地压活动进行预测预报。同时，微震监测分析系统能够实现对其他岩石工程动力灾害问题进行预测预报。

The international and domestic conditions of rock burst occurrences are summarized, and the development states of monitoring technique of rock burst are analyzed, it is found that rock burst occurs frequently as the mining depth increases and the influence scope of rock burst expands extensively. At present, there is not a valid monitoring technique and analyzing method, which can really forecast rock burst occurrence. For the purpose of the rock burst＇s prediction, the geophysical method is introduced; and the mine microseismic monitoring analysis system（MMAS） is proposed, which is composed of the microseismic monitoring system and numerical analysis system. The microseismic monitoring data, which is obtained by the microseismic monitoring system, can be transmitted by the internet to the numerical analysis system. Meanwhile, the data exchange between the monitoring system and the numerical analysis system can be implemented. By using the large-scale scientific calculation, the stress buildup, stress shadow, and stress transference of the stope, which is induced by the mining activity, are analyzed, and the rock burst occurrence is predicted. Meanwhile, the mine MMAS can also be used to predict other dynamical disasters of rock engineering.