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Tunnels
The following Projects undertaken by Soma “Demonstrate Soma’s Engineering Excellence”.I
Koyna Tunnel
Extension of 3352 M long Head Race Tunnel for Koyna HE Project, Stage-IV, Length 3345 M, Horse Shoe Dia 9.5 m
Contract Value
:
Rs. 2200 Million (US$ 48 Million)
Employer
:
Water Resources Department, Government of Maharashtra
Major Quantities
:
Excavation in Soils
:
85,453 M3
Excavation in Hard rock
:
1,665 M3
Underground Excavation
:
321,635 M3
Permanent Steel supports
:
152 MT
Concrete
:
1,430 M3
HYSD
:
7,708 MT
Shotcrete
:
4,395 M3
Rock bolts
:
26,535 M
Grouting
:
110 KG
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Parabati Head Race Tunnel
Underground works (Head Race Tunnel) from RD 24733 M to RD 29726M and Approach Adit No. 4 of length 390 M for Parbati Hydroelectric Project Stage II
Contract Value
:
Rs. 775 Million (US$ 17 Million)
Employer
:
National Hydro Electric Power Corporation Ltd.,
Major Quantities
:
Underground Excavation
:
242,150 M3
CC Lining
:
79,170 M3
Reinforced Steel
:
580 MT
Shotcrete
:
12,760 M3
Permanent Steel supports
:
1,914 MT
Rock bolts
:
4,698 M
Drilling
:
47,560 M
Grouting
:
2,568,820 Kgs
Concrete Lining
:
79,170 M3
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Ranganadi Main Tunnel
Construction of Ranganadi Main Tunnel from '0' chainage including intake structure upto chainage 6649 M for diverting water to Dikrong Power House, Dist. Lower Subansiri, Arunachal Pradesh, Length - 6649 M, Horse Shoe, Dia - 6.8 M
Contract Value
:
Rs. 502 Million (US$ 11 Million)
Employer
:
North Eastern Electric Power Corporation Ltd.
Major Quantities
:
Excavation in Soils
:
19,404 M3
Excavation in Hard rock
:
73 M3
Underground Excavation
:
17,106 M3
Concrete
:
2,764 M3
CC Lining
:
61,376 M3
Shotcrete
:
3,631 M3
Permanent Steel supports
:
219 MT
Grouting
:
512,625 Bags
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Teesta HE Project - Diversion Tunnels
Construction of Diversion Tunnels (2 Nos.) of Teesta H.E. Project Stage-V, Sikkim, Length - 1080 M, Horse Shoe, Dia - 12.2 M.
Contract Value
:
Rs. 490 Million (US$ 11 Million)
Employer
:
National Hydro Electric Power Corporation Ltd.
Major Quantities
:
Excavation in Soils
:
121,528 M3
Excavation in Hard rock
:
30,761 M3
Underground Excavation
:
165,807 M3
Concrete
:
12,966 M3
CC Lining
:
51,906 M3
HYSD
:
1,728 MT
Shotcrete
:
3,065 M3
Permanent Steel supports
:
301 MT
Rock bolts
:
30,256 M
Grouting
:
789,650 KG
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