Stability of roadway around the goaf based on microseismic monitoring technology
  
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DOI:10.3969/j.issn.1671-4172.2019.05.006
KeyWord:roof caving; microseismic events; energy index; cumulative apparent volume
              
AuthorInstitution
LIU Qiang 1,2 (1. 北京矿冶科技集团有限公司,北京 ; 2. 金属矿山智能开采技术北京市重点实验室,北京 ; 3. 承德铜兴矿业有限责任公司,河北 承德 )
ZHAO Ran3, (1. 北京矿冶科技集团有限公司,北京 ; 2. 金属矿山智能开采技术北京市重点实验室,北京 ; 3. 承德铜兴矿业有限责任公司,河北 承德 )
WANG Ping 1,2 (1. 北京矿冶科技集团有限公司,北京 ; 2. 金属矿山智能开采技术北京市重点实验室,北京 ; 3. 承德铜兴矿业有限责任公司,河北 承德 )
CAI Yongshun 1,2 (1. 北京矿冶科技集团有限公司,北京 ; 2. 金属矿山智能开采技术北京市重点实验室,北京 ; 3. 承德铜兴矿业有限责任公司,河北 承德 )
YUAN Bensheng1,2 (1. 北京矿冶科技集团有限公司,北京 ; 2. 金属矿山智能开采技术北京市重点实验室,北京 ; 3. 承德铜兴矿业有限责任公司,河北 承德 )
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Abstract:
      In this paper, microseismic monitoring technology was used to monitor in the fracture area of main roadway roof around the goaf in the third level of Chengde Tongxing mining. In the process of monitoring, an effective early warning of roof caving in this area was proposed. Through the confirmatory analysis based on the microseismic monitoring data, it can be concluded that the aggregation degree and the variation of the number of microseismic events in the region, energy index of microseismic event,and the time variation characteristics of cumulative apparent volume and energy index can be used to analyze the stability of roadway around the goaf of Chengde Tongxing mining and as the reference of ground pressure monitoring hazard warning.
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