Study on microseism response characteristics of geological anomalies in working face under the influence of mining
Liu Ziqiang1, 2, 3, Yang Bo1, 2, 3, Zhou Jinyan1, 2, 3, Wu Bin1, 2, 3, Wang Peng1, 2, 3
1. Hebei Coal Research Institute Co., Ltd.， Xingtai 054000， China; 2. Key Laboratory of Mine Water Disaster Detection and Prevention and Control, National Mine Safety Administration, Xingtai 054000, China; 3. Hebei Key Laboratory of Mine Microseismicity, Xingtai 054000, China
With the gradual extension of coal mining in China to areas with complex geological conditions, the mine water disaster caused by structure activation became a difficult problem restricting safe and efficient mining, and the accurate discrimination of fault activation trend under mining stress disturbance needed to be broken through. In view that the main geological anomaly of No.1712A Face in Zhangji Coal Mine was fault, the microseism monitoring technology was used to systematically analyze the microseism response characteristics during the mining process and the fault zone, and the risk assessment of water outburst in the geological weak zone was carried out. The results showed that when the working face was close to the fault, the number of microseism events increased significantly, the energy release presented stage characteristics, and no continuous fracture occurred in the deep limestone layer of the bottom plate, indicating that the water blocking performance of the aquifuge was not destroyed, which provided theoretical basis and technical support for effectively identifying the risk of fault activation and safe mining under complex geological conditions.
刘自强1,2,3，杨 波1,2,3，周金艳1,2,3，武 斌1,2,3，王 鹏1,2,3. 采动影响下工作面地质异常微震响应特征研究[J]. 煤炭与化工, 2025, 48(12): 51-58.
Liu Ziqiang1, 2, 3, Yang Bo1, 2, 3, Zhou Jinyan1, 2, 3, Wu Bin1, 2, 3, Wang Peng1, 2, 3. Study on microseism response characteristics of geological anomalies in working face under the influence of mining. CCI, 2025, 48(12): 51-58.
