Three-Dimensional Numerical Analysis of Compound Lining in Complex Underground Surge-Shaft Structure

Table 1

Mechanical parameters of materials.

Materials	Deformation modulus/GPa	Poisson ratio	/MPa	/(°)	Tensile strength/MPa	Compressive strength/MPa	Volume weight/kN·m^−3
Rock mass	18	0.25	1.2	52	1.5	80	26
Concrete	25	0.17	2.0	46	1.3	12.5	25
Interface	10	0.2	0.5	40	0.4	10	25