基于地球物理响应的冲击地压危险源辨识研究

Study on Identification of Mine Pressure Bumping Dangerous Sources Base on Geophysical Responses

建立了冲击地压发生模型,理论分析确定了冲击地压危险源层次化辨识思路与地球物理辨识方法;在千秋煤矿开展了井田范围微震方法监测、工作面范围地音方法监测、局部危险点电磁辐射方法监测试验研究。研究结果表明,地球物理监测方法表现出共同特点,即冲击事件前均能监测到前兆,表现为异常的微震事件、地音事件、电磁辐射事件,这些信息为辨识到的冲击地压危险源;在时间上,地球物理方法能超前冲击地压显现,而辨识到冲击地压危险源;在空间上,能够实现远程的、大范围的、立体的危险源辨识。

A mine pressure bumping occurred model was established and the hierarchical Identification idea and the geophysical method of the mine pressure bumping in underground mine were theoretically analyzed and determined. A monitoring and measuring test and study was conducted in Qianqiu Mine with the micro seismic method of the minefield, the earth acoustic method of the coal mining face scope, electromagnetic radiation method of the local dangerous location. The study results showed that the geophysical monitoring and measuring method appeared common features and that was to say that before the mine pressure bumping accident occurred, the warning signs could be monitored and measured with the abnormal micro seismic accidents, the earth acoustic accidents and the electromagnetic radiation accidents. Those information could be the mine pressure bumping dangerous sources identified. From the view of the time, the geophysical method could identify the mine pressure bumping dangerous sources befbre the mine pressure bumping occurred. From view of the space, the geophysical method could identify the remote, large scope and full dimensional dangerous sources.