Page 317 - Engineering Rock Mass Classification_ Tunnelling, Foundations and Landslides

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TABLE 20.8 Shear Strength Parameters from Different Projects in I

Roc

S. Peak value
No.
Name of the project Rock type c (MPa) f
1
2 Hydroelectric projects in India
3
4 Lakhwar Dam Trap 0.68 42
— —
5 Chamera Dam project Phyllites — —

6 Hibra hydroelectric project Phyllitic quartzite 0.50 68
1.20 59
7 Srinagar Dam (left bank) Quartzite
8 Main drift — —
9 T-section — —
0.76 46
Srinagar Dam (right bank) Quartzite
Main drift 0.27 70
T-section 0.25 57
— —
Srinagar Dam (right bank) Metabasic
Main drift

Greater Shillong Dam Phyllites

Nathpa Jhakri Dam Mica schist

Kalpong Dam Ultrabasic