Figure 6

Strain field evolution of falling type dangerous rock. (a) t = 200 s. (b) t = 663 s. (c) t = 860 s. (d) t = 920 s. (e) t = 937 s.

Strain field evolution of falling type dangerous rock. (a) t = 200 s. (b) t = 663 s. (c) t = 860 s. (d) t = 920 s. (e) t = 937 s.