Numerical Simulation of Cracking Behavior of Precracked Rock under Mechanical-Hydraulic Loading

Figure 19

The tensile crack types initiated from the preexisting flaws by Wong and Einstein [31]. : tensile cracking opening; : shearing displacement.

(a) Type I tensile crack (tensile wing crack)

(b) Type II tensile crack

(c) Type III tensile crack

(d) Mixed tensile-shear crack

(e) Type I shear crack

(f) Type II shear crack

(g) Type III shear crack