Research Article
Study on Characteristics of Mining Earthquake in Multicoal Seam Mining under Thick and Hard Strata in High Position
Figure 5
Temporal distribution and evolution law of microseismic events and mining earthquake during lower coal seam mining. (a) Energy level 102 J < E < 104 J. (b) Energy level 104 J < E < 105 J. (c) Energy level E > 105 J.
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