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

Figure 7

Surveying variation curve of vertical displacement follows each exploit progress (20°). (a) Variation curve of vertical subsidence after 1-step excavation at each measuring point. (b) Variation curve of vertical subsidence after 3-step excavation at each measuring point. (c) Variation curve of vertical subsidence after 5-step excavation at each measuring point. (d) Variation curve of vertical subsidence after 6-step excavation at each measuring point.

(a)

(b)

(c)

(d)