Study on establishment and application of microseismic monitoring systemin Tonglushan mine

In view of the phenomenon of ground pressure in the Tonglushan mine, 16 channel deep ground pressure microseismic monitoring system is established.The waveforms, time distribution law and spatial distribution law of microseismic events are analyzed, and the mine rockburst disasters are predicted by apparent volume and energy index.The debugging results show that the positioning error of the microseismic monitoring system is less than 20 m, which can meet the needs of mine microseismic monitoring.The microseismic activity is closely related to the mining activity, and it mainly shows two active periods in time, which are the 14:00 time period and the 15:00 time period.In space, the microseismic events appear as a clustering phenomenon in the northeastern region of the middle section of -665 m and the northward zone of the middle of -845 m.The prediction results show that the possibility of a rockburst disaster in the mine is slim in the short term.