Seismic Responses and Damage Mechanisms of Deep-Buried Underground Powerhouse in Layered Rock Mass

Table 1

Mechanical parameters of the model materials.

Materials	Deformation modulus (GPa)	Poisson ratio	Cohesion (MPa)	Internal frictional angle (°)	Tensile strength (MPa)	Compressive strength (MPa)	Density (g·cm^−3)
Hard rock	8	0.24	1.10	42.0	1.95	40	2.61
Soft rock	2	0.30	0.35	26.0	0.25	20	2.30
Lining	28.0	0.167	1.8	46.0	1.27	11.9	2.5
Interface	—	—	1.0	30.0	—	—	—