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

Figure 11

Damage condition of overlying strata after multiexcavations (50°). (a) Model before excavation (50°). (b) Damage condition of overlying strata after the first exploit progress (50°). (c) Damage condition of overlying strata after the fifth exploit progress (50°). (d) Damage condition of overlying strata after the sixth exploit progress (50°). (e) Damage condition of overlying strata after the eighth exploit progress (50°). (f) Damage condition of overlying strata after the tenth exploit progress (50°).

(a)

(b)

(c)

(d)

(e)

(f)