关键词: 大采深孤岛工作面, 被动CT反演, 冲击地压, 评价模型

Abstract: Due to high static load，complex overburden space structure and violent roof movement， the large mining depth island working face is easy to induce rock burst accidents when it encounters dynam‐ ic load disturbance or geological structure change，which seriously threatens the safe mining of working face. In order to prevent the occurrence of rock burst accidents，the passive CT wave velocity inversion is carried out for the effective microseismic events in different mining stages of the 1310 large mining depth island working face by using the microseismic monitoring system and the passive CT inversion technology. Then， the inversion results are combined with the impact risk assessment model to predict the impact risk area of the working face. The prediction results show that the coal strata in the detection area are generally in the middle impact risk level，which is basically consistent with the actual situation. The application results show that the passive seismic wave CT inversion technology combined with the impact risk assessment model can effectively predict the potential impact danger zone in the surrounding area of the working face，and provide scientific guidance for the next stage of pressure relief and impact prevention measures and provide effective guarantee for the safe mining of the working face.

Key words: large mining depth island working face, passive CT inversion, rock burst, evaluation model