随着大范围采矿活动的进行，正断层易滑动失稳产生震动波，并在断层两侧区域呈现出显著不对称动力响应特征。为解释山东新巨龙能源有限责任公司发生“2·22”冲击地压事故破坏区域主要集中在FD8断层上盘区域而下盘几乎没有出现动力破坏这一现象，从理论上分析了断层面（带）隔震的基本力学机理，基于波场及能量分解建立起了弹性波在断层面（带）界面波场分解能量系数模型，通过不同倾角断层面、不同破碎带厚度对震动波阻隔性数值模拟，并对正断层两盘活动性差异进行了分析。研究表明，对于一个相对孤立正断层（非断层组）而言随着断层倾角的增大，正断层上盘内的震动波沿着断层面“透射”将明显降低，呈现出显著的“隔震”特性，即当正断层上盘滑动诱发震动波难以穿过断层传播至下盘；地下正断层两盘活动差异性即断层上盘下降滑动、下盘不动2个方面揭示了正断层两盘动力灾害显现差异性动力学机制，为科学认知正断层活动诱灾机制提供了参考，并为在地下采矿中正断层诱灾防控策略提供了理论依据。

With the development of large-scale mining activities, the normal fault is prone to slide and instability, resulting in vibration waves, which show significant asymmetric dynamic response characteristics in the areas on both sides of the fault. In order to solve the phenomenon that the “2·22” rock burst accident occurred in Shandong Xin Julong Energy Co., Ltd., the damage area is mainly concentrated in the FD8 fault hanging wall，but almost no dynamic damage in the footwall, it was theoretically analyzed the basic mechanical mechanism of fault plane (belt) isolation, by establishing an energy coefficient model of elastic wave field decomposition at along fault plane, based on the wave field and energy decomposition; numerically simulations for vibration wave barrier of fault plane with different dip angles and different fracture zone thickness were done; and it was also analyzed the activity difference between the two walls of normal fault. The investigations showed that for a relatively isolated normal fault (non fault group), with the increase of fault dip angle, the “transmission” of seismic waves in the hanging wall of the normal fault along the fault plane will be significantly reduced, showing a significant “isolation” characteristic. Also, the activity is different between two walls of normal fault, i.e. the hanging wall slides downward instead of the footwall slides upward. Thus, the dynamic mechanism of the difference between the two walls was revealed. It provides a reference for scientific cognition of the mechanism of normal fault induced disaster, and provides a strategy for the prevention and control of normal fault induced disaster in underground mining

0 引言
1 断层两盘动力灾害显现差异性实例
2 断层面隔震力学机理
2.1 弹性波沿断层面波场分解
2.2 弹性波在断层面能量分配
3 断层面倾角及破碎带厚度对震动波传播透射影响
3.1 断层面倾角对震动波传播透射影响
3.2 断层破碎带厚度对震动波传播透射影响
4 断层两盘活动性差异讨论
5 结论