Research on Tunnel Surrounding Rock Failure and Energy Dissipation Based on Cyclic Impact and Shear Loading

Figure 14

Stress-strain curve with the impact velocity of 13.6 m/s. (a) Typical stress-strain curve. (b) Rotation speed is 0 rpm. (c) Rotation speed is 66 rpm. (d) Rotation speed is 120 rpm. (e) Rotation speed is 255 rpm. (f) Rotation speed is 375 rpm.

(a)

(b)

(c)

(d)

(e)

(f)