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

Figure 6

Evolution of the fracture network in the coal seam in vertical section plane 3: (a) 150 m from the mining face; (b) 100 m from the mining face; (c) 50 m from the mining face; (d) at the mining face.

(a)

(b)

(c)

(d)