A Numerical Study of Underground Cavern Stability by Geostress Characteristics

Table 3

Mechanical parameters of surrounding rock.

Number	Deformation modulus; (10^4 MPa)	Friction angle; (°)	Cohesion; (MPa)	Poisson ratio	Unit weight; (KN/m^3)
I	2	50	1.2	0.2	2650
II	4	55	2	0.25	2650