Biaxial Shear Crack Propagation Modes of Rock-Like Specimens with Prefabricated Fissures and Their Strength Characteristics

<div>Schematic of crack types and propagation modes. (a) Crack type. (b) Crack propagation mode. Note: ① prefabricated fissure; ② shear crack; ③ secondary shear crack; ④ secondary tensile crack; ⑤ secondary tensile-shear crack.</div>

Shock and Vibration

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Figure 7

Figure 7: Biaxial Shear Crack Propagation Modes of Rock-Like Specimens with Prefabricated Fissures and Their Strength Characteristics 