Application of micro seismic technique in emergency management

Micro seismic (MS) events are closely related to underground rock mass crack, which has a direct relationship with the mining activities. With MS monitoring, the active area in rock mass can be found so as to instruct the mining work and to prevent disasters such as rock fall, collapse and so on. A set of monitoring equipment is developed to monitor MS activities and to locate the MS event by time delay method, on the basis of which the safety condition is worked out. Combined with emergency management (EM), this method can provide a more rational judgment on the safety status of rock mass and people can take steps in advance.