基于微震监测和多因素耦合法的冲压危险性研究

Research of Risk of Rock Burst Based on Micro-seismic Monitoring and Multi-factor Coupling

针对冲击地压影响因素多样性而难以准确评价的问题,在某一工作面开采前期采用多因素耦合法,对煤岩结构、地质结构、覆岩空间结构运动和预留煤柱等5个影响因素的可能影响范围和程度进行危险性分析;并划分出工作面的危险区域及其程度;最后,在开采过程中采用微震监测的方法分析5个因素所影响的区域,并分别进行验证;结果证明运用微震监测和多因素耦合理论进行分析,可以有效地实现对冲击地压的预测预警。

In view of the problem for accurately evaluating the risk of rock burst because of the variety of factors, First of all, the five factors are analyzed by the method of multi-factor coupling which are respectively the coal and rock structure, the geological structure, the movement fo the overlying strata spatial structure and the reserved coal pillar to get the dangerous areas and the dangerous levels in one working face mining. The method of micro-seismic monitoring is used to verify the dangerous areas and the dangerous levels. Finally, the conclusion is that the joint on the micro-seismic monitoring and the multi-factor couplingin can effectively implement the early the forecast of the rock burst.