Study on the Characteristics of Safety Distribution Changing with Buried Depth for Metro Station in Upper-Soft and Lower-Hard Stratum

Table 2

Computational parameters.

Stratum type	Unit weight (kN/m^3)	Elastic module (GPa)	Poisson ratio	Cohesion (MPa)	Internal friction angle (°)
Soil layer	22.5	0.05	0.38	0.032	20
Rock layer	24.5	5.0	0.25	0.60	35