Table 2 Physical and mechanical parameters of rock and fault.

From: Research on stress field inversion and large deformation level determination of super deep buried soft rock tunnel

Rock type

Density (kN/m3)

Elastic modulus (GPa)

Poisson’s ratio

Internal friction angle (°)

Cohesion (kPa)

Sandy slate

22.3

1.12

0.28

25

200

Schistosized basalt

23.5

1.01

0.26

23

150

Fault

20.3

0.58

0.30

18

100