Material

k/(m/d)

ρ/(kg/m³)

c/kPa

ϕ/˚

E/GPa

μ

Strongly weathered granite

1.60

2000

60

22.8

1.2

0.3

Moderately weathered granite

0.70

2500

500

35

5

0.25

Micro-weathered granite

0.02

2700

1500

45

15

0.2

Excavation damaged zone

4.20

2300

430

32

4.3

0.25

Grouting circle

0.07

2600

600

40

6

0.25

Shotcrete

1e-5

2400

2800

50

28

0.2

The secondary lining

0

2500

/

/

32.5

0.2