Experimental Study of Influence of Support Failures on Rockbursts under True-Triaxial Condition

Figure 21

The size distribution of the fragments for different support failure rates (unit: mm): (a)  = 0.1 MPa/s; (b)  = 0.5 MPa/s; (c)  = 1.0 MPa/s; (d)  = 2.0 MPa/s.

(a)

(b)

(c)

(d)