A Slate Tunnel Stability Analysis considering the Influence of Anisotropic Bedding Properties

Table 3

Parameters of rock mass.

Material		Dry density ρd (kg/m^3)	Poisson’s ratio υ	Elastic modulus Es (GPa)	Cohesion c (MPa)	Friction angle φ (°)
Slate rock Mass	Direction 1	2771	0.27	78.23	0.7394	11.96
	Direction 2				1.0965	9.18