Dynamic Shear Strength of Rock Joints and Its Influence on Key Blocks

Figure 10

The number and distribution of key blocks under different impact disturbances.

(a) The number and distribution of key blocks under static loading

(b) The key blocks under the impact velocity of 4.850 m/s

(c) The key blocks under the impact velocity of 8.722 m/s

(d) The key blocks under the impact velocity of 12.784 m/s

(e) The key blocks under the impact velocity of 16.935 m/s