基于微震监测技术的矿区断层活动研究

利用高精度微震监测技术,对寿王坟南六号特大空区附近断层活动及该采空区围岩稳定性进行监测。通过对微震事件定位及其时空分布特征分析,得到断层活化的空间位置。利用微震事件b值趋势分析,实现未来一段时间内微震事件能量强度的预判。利用微震事件释放的P、S波能量比值(Es/Ep),研究断层附近区域诱发微震事件的震源机理。该实践表明,在断层附近区域布设微震监测系统,能够为分析断层活动趋势、评价采空区围岩稳定性及发展趋势等提供有效的预判信息,为保证矿山安全发挥重要的作用。

Study on fault activity in mining area based on micro-seismic monitoring technology

In this paper, using high-precision microseismic monitoring technology, the fault activity near the Shou Wang Fen south six big goaf and the wall rocks stability of mined-out area were monitored. Through the analysis of characteristics of seismic event location and its space-time distribution, knowing the space location of fault activation; Using microseismic events b value trend analysis are used to achieve the anticipation of energy intensity of future seismic events over a period of time; Using seismic event release of P, S wave energy ratio (Es/Ep), studied the mechanism of inducing microseismic events near fault .The practice shows that the microseismic monitoring system arranged near the fault zone, to analyze the trend of fault activity, to evaluate the surrounding rock stability of mined-out area and the trend of development, to provide effective forecasting information, to ensure the safety of mine production.