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

Table 1

Comparison of physical and mechanical parameters between original rock and rock-like specimens.

Mechanical parameters	γ (kN/m^3)	σc (MPa)	E (GPa)	μ	C (MPa)	φ (°)
Sandstone [27]	23	20–170	4.9–78.5	0.02–0.2	—	—
Rock-like specimens	25.3	41.0–43.0	3.16–3.56	0.3	5.98–7.18	45.5–51.5