关键词: CT探测, 冲击危险区, 应力异常, 卸压解危

Abstract: The 3F 113 working face of Tengdong Shengjian Coal Mine in Shandong Province is affected by many factors, such as goaf, fault, coal pillar and mining, etc. It has strong impact risk. In order to grasp the distribution characteristics of stress anomaly in the working face, the vibration wave CT is proposed. The detection technology, combined with the static evaluation results before mining, carry out the risk analysis of the impact pressure and targeted prevention measures. After detection and analysis, three potential impact zones of A, B and C and six possible uncovered faults were obtained. Before the mining, special measures such as large diameter drilling, blasting pressure relief and bottoming were taken for the potential impact danger zone. The micro-seismic and stress monitoring methods were used to test the pressure relief effect, and finally the safe mining of the dangerous working face with strong impact was realized. The technical system can provide a good reference for the impact hazardous working face under similar conditions.