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

Figure 8

Field observations collected by Gao et al. [13]: (a) schematic diagram of the evolution of fractal dimension in different drill holes with distance from the mining face; (b) evolution of the pressure on a single prop as the mining face advances.

(a)

(b)