Experimental Study on the Influence Mechanism of the Structural Plane to Rockbursts in Deeply Buried Hard Rock Tunnels

Figure 6

The shear strain contours of model sample A at different test stages: (a) 83 sec. (b) 87 sec. (c) 299 sec. (d) 305 sec. (e) 307 sec. (f) 308 sec.

(a)

(b)

(c)

(d)

(e)

(f)