Surface Movement and Deformation Law Caused by Different Coal Pillar Stagger Distances in Strip Filling IoT-Enabled Sustainable Mining

Figure 8

The vertical displacement nephogram of strata on numerical simulation scheme (for α = 10° and s = 0, 0.25, 0.5, 1). (a) s = 0. (b) s = 0.25. (c) s = 0.5. (d) s = 1.

(a)

(b)

(c)

(d)