深部开采冲击地压灾害孕灾过程中既有静态基础量又有动态变化量，剧增的原岩应力与覆岩断裂、井下爆破等引起的动载扰动是诱发冲击地压灾害的源头，因此实现冲击危险性快速、高精度评价必须综合考虑动静载作用。笔者开展了典型煤岩霍普金森压杆试验及数值模拟，分析了动载对煤岩体破坏作用以及对应力场的影响，针对应力变化可以直接引起介质中震动波波速变化，且波速变化前的幅值与变化幅度均受应力场影响这一特性，掌握了震动场与应力场的耦合关系，建立了多场耦合冲击危险性动态评价技术：以原岩应力场表示煤岩孕灾过程的静态基础量，以采动应力场和震动场表示煤岩孕灾过程的动态变化量，以波速异常指数、波速梯度指数、应力异常指数、应力梯度指数为评价指标可实现煤岩冲击危险性动态评价。研究结果表明：动载作用下能量以震动波形式传递，造成应力场的重新分布，应力呈现分区传递特点，并且在能量达到某一阈值后引起煤岩损伤破坏，但无论动载直接作用在岩石上还是煤体上，岩石是能量传递路径，煤层是能量耗散、释放主体，破坏主要发生在煤体中。多场耦合冲击危险性评价技术在某工作面经现场应用，在工作面逐渐揭露断层过程中冲击危险性由强冲击危险性降低到中等冲击危险性，现场监测数据表明评价结果与现场实际相符。

Static basic quantity and dynamic variation quantity exist in the process of rockburst in deep mining. Dynamic load disturbance and the increasing of in-situ stress field are the source of rockburst. Therefore,the dynamic and static load must be considered comprehensively in the fast and high-precision evaluation of rockburst hazard. Hopkinson pressure bar experiments and numerical simulations were carried out to analyze the influences of dynamic load on the damage and stress field of the coal rock. In view of the fact that the change of stress could directly cause the change of vibration wave velocity and the amplitude before and after the change of wave velocity were affected by the stress field,the coupling relationship between vibration field and stress field was mastered and the multi-field coupling dynamic evaluation method of rockburst hazard was established. In the process of catastrophe,the in-situ stress field represents the static foundation quantity,and the mining stress field and the vibration field represent the dynamic change quantity. The wave velocity anomaly index,wave velocity gradient index,stress anomaly index and stress gradient index are used as evaluation indexes to realize dynamic evaluation of rockburst hazard. The results show that the energy is transmitted in the form of vibration wave under dynamic load,resulting in the redistribution of stress field. The stress presents the characteristics of zonal transmission,and causes the damage of coal and rock when the energy reaches a certain threshold. However,no matter the dynamic load directly acts on the rock or the coal,the rock is the energy transfer path,the coal seam is the main body of energy dissipation and release,and the failure mainly occurs in the coal. The multi-field coupling dynamic evaluation method of rockburst hazard was applied on a certain working face. The rockburst hazard was reduced from strong to medium in the process of gradually exposing faults. The field monitoring data showed that the evaluation results were consistent with the actual situation.