Figure 5

Strain field evolution of toppling type dangerous rock. (a) t = 200 s. (b) t = 725 s. (c) t = 840 s. (d) t = 950 s. (e) t = 995 s.

Strain field evolution of toppling type dangerous rock. (a) t = 200 s. (b) t = 725 s. (c) t = 840 s. (d) t = 950 s. (e) t = 995 s.