Analysis of Damage Mechanism of Tunnel Lining Structure under the Coupling Action of Active Fault

Table 2

Material parameters of surrounding rock and fault.

Model	Density (kg/m^3)	Elastic modulus (MPa)	Poisson’s ratio	Internal friction angle (°)	Cohesion (kPa)
Fault	2300	1.6 × 10^3	0.4	28	0.1 × 10^3
Surrounding rock	2400	3.5 × 10^3	0.32	35	0.4 × 10^3