Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams

Figure 10

Ground pressure of working face in different stagger distance: (a) internal stagger 30 m, (b) internal stagger 20 m, (c) internal stagger 10 m, (d) overlap, (e) external stagger 10 m, (f) external stagger 20 m, (g) external stagger 30 m, and (h) external stagger 40 m.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)