Name of the material

Constitutive model

Elasticity modulus/ GPa

Poisson’s ratio

Apparent cohesion

/MPa

Internal friction angle/˚

surrounding rock (A)

Moore Coulomb

0.5

0.22

0.6

23

surrounding rock (B)

Moore Coulomb

1

0.25

0.8

25

surrounding rock (C)

Moore Coulomb

1.2

0.23

1.2

26

rock bolt

elasticity

200

0.3

1.0

30