老虎台矿55002#掘进面通过F7-1断层前后微震事件的时空特征分析

冲击地压作为一种特殊的矿压显现形式,对抚顺矿业集团老虎台矿深部开采的安全生产造成了严重的影响,在该矿的实际生产中,地质条件是引发冲击地压发生的重要因素。鉴于微震监测系统是目前在煤矿井下监测冲击地压应用较为广泛的手段之一,本文利用波兰ARAM IS/MA微震监测系统对老虎台矿55002掘进工作面通过F7-1断层前后的微震特征信号进行连续观测,分别从时间和空间上研究此掘进面通过断层前后的微震特征,验证了一种典型的冲击地压发生时间前后的微震活动规律,并结合实际地质条件从位置上分析了微震事件与断层等地质构造之间的关系,进而根据空间分析结果圈定了重点防治冲击地压区域,使老虎台矿在该工作面掘进生产中提前采取相应的防范措施,顺利通过断层等地质构造异常区域,确保了安全生产。

Space-time characteristics analysis of microearthquake events before & after F7-1 fault on 55002 heading face in Laohutai colliery

Rockburst,as a special kind of underground pressure manifestation mode,affect production safety of deeply mining fro Laohutai coal mine of Fushun mining group in a serious way.In the actual production of this mine,geological condition is one of the important factors which caused rockburst.In view of seismic monitoring system is widely applied in rockburst monitoring of underground mines currently,Poland ARAMIS/MA seismic monitoring system was applied for continuous observation on the seismic characteristic signal on Laohutai mine 55002 heading face before and after the F7-1 fault,this characteristics was separately studied on the heading face before and after the fault from time and space,a typical rule of rockburst occurring time before and after the seismic activity was proved,and combining the actual geological conditions from position analysis on the seismic events,the relationship with the geological structure,such as faults,then according to space analysis results the priority control rockburst area was delineated,make the Laohutai coal mine in advance to take corresponding preventive measures in 55002 heading face,smoothly through faults and the other tectonic abnormal area,production of tunneling,ensure safe production.