Ground Pressure under Mining Ore Bodies of Different Angles Based on Physical Simulation

Figure 10

Damage condition of overlying strata after multiexcavations (20°). (a) Model before experiment (20°). (b) Damage condition of overlying strata after the first exploit progress (20°). (c) Damage condition of overlying strata after the second to sixth exploit progress (20°). (d) Damage condition of overlying strata after the number one to five ore pillar recovery (20°).

(a)

(b)

(c)

(d)