主辦單位:煤炭科學研究總院出版傳媒集團、中國煤炭學會學術期刊工作委員會
Activationcharacteristicsanalysisonconcealedfaultintheexcavatingcoalroadwaybasedonmicroseismicmonito
  • 作者

    Liu ChaoLi ShugangCheng ChengXue Junhua

  • 單位

    School of Safety Science and EngineeringXi’an University of Science and Technique State Key Laboratory of Deep Coal Mining & Environment Protection

  • 摘要

    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.

相關問題

主辦單位:煤炭科學研究總院出版傳媒集團 中國煤炭學會學術期刊工作委員會

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