Numerical Studies on the Failure Process of Heterogeneous Rock Material with Preexisting Fracture under Uniaxial Compression

Figure 15

Stress distribution of samples at Step 20 with various lengths (2a) of preexisting fracture, (a)  = 15 mm; (b)  = 20 mm; (c)  = 25 mm; (d)  = 30 mm; (e)  = 35 mm.

(a)

(b)

(c)

(d)

(e)