ICGCM Papers:
Rockmass Characterization/Hazard and Risk Assessment
 
 
Applications of Microseismic Monitoring in China’s Underground Coal Mines
31st International Conference on Ground Control in Mining
Applications of Microseismic Monitoring in China’s Underground Coal Mines
by
Xiangxi Wu, Esg Solutions, Kingston, CanadaZara Hosseini, Esg Solutions, Kingston, CanadaChao Liu, Xi'an University of Science and Technology, Xi'an, ChinaCezar Trifu, Esg Solutions, Kingston, Canada
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Author's Presentation PPT
[Conference] 31st International Conference on Ground Control in Mining
[Price] Free  [Comments] 0
[Topical Area] Rockmass Characterization/Hazard and Risk Assessment
[Author] Xiangxi Wu, Esg Solutions, Kingston, CanadaZara Hosseini, Esg Solutions, Kingston, CanadaChao Liu, Xi'an University of Science and Technology, Xi'an, ChinaCezar Trifu, Esg Solutions, Kingston, Canada
[Abstract] 
Problem Statement:
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In today's coal mining industry,underground mining methods such as longwall mining and continues mining are prevalent. In such coal mining methods, ground failures such as roof fall, gas outburst and rock burst caused by stress redistribution and weakness of the rock or the coal seam are the main challenges to the ground control.
Objective of the Paper:
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The objective of implementing the seismic monitoring technology in the underground coal mining is to record the mine-induced seismicity which theoretically reflects the stress redistribution and weakness of the rockmass and the coal seams. The coal miners can identify and assess the ground hazards based on seismic results such as event locations, magnitudes, cluster patterns, and accumulating rates etc. The seismic results can also be used for planning ground control strategy to prevent critical rock failures.
Key Findings:
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This paper discusses the seismic monitoring applications in several China’s coal mines. Further analysis of those seismic results was performed to optimize the seismic result calculation. Case studies were carried out to analyze the relationship between the mine-induced seismicity and the activities of the coal seams and rockmass.
Key Conclusions:
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The seismic records can provide insight into the behaviors of the rockmass and coal seam. Optimization of the seismic results can be achieved by using advanced data processing algorithms based on more detailed and accurate geological information. Seismic monitoring technology can be a useful tool for ground hazard monitoring in underground coal mining.