Research Article

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

Table 2

Physicomechanical parameters of slate.

MaterialDry density ρd (kg/m3)Poisson’s ratio υElastic modulus Es (GPa)Cohesion c (MPa)Friction angle φ (°)

Slate27710.2778.237.39411.96