Induced Seismicity Resulting from Roof Caving and Pillar Failure in Longwall Mining
作者： NJ Kusznir , NH Al-Saigh , IW Farmer , None
DOI: 10.1016/B978-0-444-42086-2.50007-7
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摘要: SUMMARY The causal relationship between seismicity and longwall coal extraction in the North Staffordshire coalfield has been established. larger seismic events (M L = 2.5 − 3.5) occur pillars of previous workings when active face passes under or above these pillars. These have a shear source mechanism are generated by failure within smaller events, many which an implosional mechanism, interpreted as being strata collapse behind waste adjacent panels.
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