Abstract:

It was found that the crustal stress increased gradually with mining depth，which resulted in the damage of surrounding rock more and more serious，together with a certain propensity to rock burst.In order to further explore the regularity of rock rupture instability caused by deep mining，microseismic monitoring system for continuous collecting microseismic activity information underground was established at Jinqingding mine area，continuous real-time information acquisition downhole microseismic activity.Ore body experiment on mining activities for continuous monitoring was carried out at 825 m-V orebody in the middle section of the 11#，with focusing on analysis of mining disturbance before rock burst under the cumulative volume，energy index and schmidt number change characteristics of seismic parameters，finally we concluded that damage degree of the current ore body was relative less，and rock mass fracture was primarily caused by rock mass excavation and blasting vibration.

Key words: micro-seismic monitoring, deep mining, activity, rock fracture, Jinqingding gold mine