Movement Laws of Overlying Strata above a Fully Mechanized Coal Mining Face Backfilled with Gangue: A Case Study in Jiulishan Coal Mine in Henan Province, China

Figure 18

Surface deformation laws under different elastic moduli of backfilled gangue. (a) Surface subsidence. (b) Horizontal deformation. (c) Curvature deformation. (d) Inclination deformation.

(a)

(b)

(c)

(d)