Stability Analysis of Irregular Cavities in Tunnel Using Geomagic-COMSOL Coupling Method

Table 1

Parameters of geotechnical material.

Parameters	Unit	Rockmass
Density	kg/m^3	2580
Compression strength	MPa	40.48
Tensile strength	MPa	2.24
Elasticity modulus	GPa	39.52
Poisson’s ratio	—	0.26
Friction angle	°	37
Cohesion	MPa	4.32
Permeability coefficient	cm/s	7.2e − 6