Activation characteristics analysis on concealed fault in the excavating coal roadway based on microseismic monitoring technique
Activation characteristics analysis on concealed fault in the excavating coal roadway based on microseismic monitoring technique
复制标题
基于微震监测技术的回采煤巷隐伏断层活动特征分析
DOI：
10.1016/j.ijmst.2017.06.023
复制
发表时间：
2017-09-01
影响因子：
11.8
通讯作者：
Xue Junhua
中科院分区：
文献类型：
--
作者：
Liu Chao;Li Shugang;Xue Junhua
In order to effectively monitor the concealed fault activation process in excavation activities, based on the actual condition of a working face containing faults with high outburst danger in Xin Zhuangzi mine in Huainan, China, we carried out all-side tracking and monitoring on the fault activation process and development trend in excavation activities by establishing a microseismic monitoring system. The results show that excavation activities have a rather great influence on the fault activation. With the working face approaching the fault, the fault activation builds up and the outburst danger increases; when the excavation activities finishes, the fault activation tends to be stable. The number of microseismic events are corresponding to the intensity of fault activation, and the distribution rules of microseismic events can effectively determine the fault occurrence in the mine. Microseismic monitoring technique is accurate in terms of detecting geologic tectonic activities, such as fault activations lying ahead during excavation activities. By utilizing this technique, we can determine outburst danger in excavation activities in time and accordingly take effective countermeasures to prevent and reduce the occurrence of outburst accidents. (C) 2017 Published by Elsevier B.V. on behalf of China University of Mining & Technology.
