Place
Malaysia
Client
Salini S.p.A.
Year
2013 - 2014
Description for Ulu Jelai Hydropower (Malaysia)
Ulu Jelai project consists in a RCC gravity dam and an undergound power house, with an installed power of 382 MW.
Main Features
- Reservoir ( Catchment area 158 km2, V = 24 Mm3 )
- Underground powerhouse ( Dim. 88 x 22.5 x 35.5 m, No. 2 Francis turbines, IP = 2x191 MW )
- Susu dam ( RCC gravity type, H = 88 m, L = 466 m )
- Spillway ( Free-overflow, L = 40 m, Q = 1,726 m3/s, Dim. 9 x 7 m )
- Rockfill Cofferdam ( H = 14 m, L = 26 m )
- Diversion tunnel ( L = 207 m, W = 6.5 m )
- Headrace tunnel ( L = 4’200 m, D = 8.3 m )
- Surge shaft ( Upper portion: H = 74 m, D = 17 - 19 m; Lower portion: H = 170 m, D = 6.5 m )
- Tailrace tunnel ( L = 1,715 m, D = 8.3 m )
Engineering Services
- Consultancy services
- Construction design of the Surge shaft, Diversion tunnel and Cofferdam