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

Figure 9

Surveying variation curve of vertical displacement follows each exploit progress (50°). (a) Variation curve of vertical subsidence after 1-step excavation. (b) Variation curve of vertical subsidence after 5-step excavation. (c) Variation curve of vertical subsidence after 8-step excavation. (d) Variation curve of vertical subsidence after 10-step excavation.

(a)

(b)

(c)

(d)