Evolution of Mining-Induced Stress in Downward Mining of Short-Distance Multiseam

Figure 5

Dynamic evolution of mining-induced stress during the single 8-1 coal seam mining at various advance distances: (a) 24 m, (b) 56 m, (c) 120 m, and (d) 200 m.

(a)

(b)

(c)

(d)