Failure Process and Stability Analysis of Rock Blocks in a Large Underground Excavation Based on a Numerical Method

Table 1

Mechanical parameters of the materials.

Material	Deformation modulus (GPa)	Poisson ratio	Cohesion force (MPa)	Frictional angle (°)	Density (g·cm-3)	Tensile strength (MPa)
Rock	15	0.3	0.6	35.0	2.7	1.5
Fault	2	0.4	0.5	25.0	2.0	0.5
Interface			0.0	30.0