Research Article

Numerical Simulation on the Evolution of Mining-Induced Fracture Network in a Coal Seam and Its Overburden under the Top Coal Caving Method

Figure 12

Evolution of the fracture network in the typical lower strata (pebbly sandstone) with mining advance based on the horizontal section planes: (a) 50 m; (b) 100 m; (c) 200 m; (d) 300 m.
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(b)
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