Salini Costruttori S.p.A.
2008 - 2009
Description for Mambilla Hydropower (Nigeria)
Hydroelectric Power Plant including 3 dams, 2 underground power houses and auxilliary works.
- Gembu Dam ( RCC dam, H = 100 m, Crest Length = 515 m, Vol. = 1.2 Mm3 )
- Sumsum Dam ( RCC dam, H = 35 m, Crest Length = 460 m, Vol. = 1.2 Mm3 )
- Nghu Dam ( Rockfill dam, H = 95 m, Crest Length = 680 m, Vol. = 5 Mm3 )
- Donga Crossing Penstock ( No. 2, L = 2.3 Km, D = 3 m )
- Gembu - Sumsum Tunnel ( L = 16 Km, D = 6 m, type unlinking )
- Sumsum - Nghu Canal ( L = 1,5 Km, Width = 10 m )
- Headrace canal ( L = 3.1 Km, Width = 15 m )
- Power Shaft ( N° 16, D = 5.25 – 8.40 m, Total L = 1000 m )
- Underground Power Houses ( No. 2, Dimensions 175 x 27 x h 38 m, No. 16 Turbines Pellton, Power of Each Group = 250 MW, Firm Energy = 6,940 GWh/y, Design Flow = 88 m3/s, Total Head = 1007 m, Total Installed Power = 4'000 MW )
- Tailrace Tunnel ( No. 2, type unlined, L = 6 Km, D = 8 m )
- Tailrace canal ( L = 3 Km, Width = 25 m )
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