Experimental Study on the Anisotropy of Layered Rock Mass under Triaxial Conditions

Table 1

The physical and mechanical parameters of the soft and hard rocks.

Material	Density (g·cm^−3)	Ratio (mass ratio) of cement : gypsum : quartz sand : water	Compressive strength (MPa)	Young’s modulus (GPa)	Cohesion (MPa)	Friction angle (°)	Possion’s ratio (%)
Hard rock A	2.07	1 : 0 : 1 : 0.6	34.42	9.87	8.65	33.9	0.19
Soft rock B	1.85	1 : 0.4 : 1 : 0.9	16.50	4.93	5.55	29.6	0.21
Soft rock C	1.64	0.5 : 0.5 : 1 : 0.9	6.91	1.79	2.26	25	0.25