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.
(a) |
(b) |
(c) |
(d) |