Shafaroud RCC Dam Project
Project Purpose / Layout
The purposes of the dam are to supply 23.1x106-m3 drinking water to cities of Rezvan Shahr, Pareh Sar and Talesh, supply 10x106-m3 water to Chuka industries per annum, irrigate 5800 hectares of downstream farmland, and to generate about 40-GWH electricity per annum.
Geographic Location
The dam site is being built on the Shafaroud River, 6-km southwest of city of Rezvan Shahr and 65 km from city of Rasht. The project area is situated in Gilan plain that is surrounded by Mazandaran Sea and the Dinachal River in the north, the Shanderman River in the south, the canal branching off from th eSefidroud network in the east and forest heights in the west.
Project History
The phase I study was began by AIS Consulting Company in 1974 and assigned to Mahab Ghodss Consulting Engineering Company in 1981. As the study area was extensive, it was divided into two parts including Eastern Gilan and Western Gilan. The priority was given to the studies in the Eastern Gilan and put on Mahab Ghodss's agenda. In 1986 the studies were began by field investigation in the region.
Specific Characteristics of Project
- To finance the scheme through Chinese credit line (45 million euro)
- To change the type of dam to RCC dam
- To decrease the height of the dam due to environmental reasons (22 m)
Technical Specifications of Project
|
Dam |
|
|
Dam type |
RCC |
|
Dam height above foundation (m) |
114 |
|
Dam crest length (m) |
300 |
|
Dam crest width (m) |
7 |
|
Dam body volume (m3) |
900 x 103 |
|
Total reservoir volume (m3) |
52.2 x 106 |
|
Active reservoir volume (m3) |
37.4 x 106 |
|
Mean annual inflow (m3/s) |
- |
|
Spillway |
|
|
Type of spillway |
Free spillway |
|
Flood discharge capacity (m3/s) |
1880 |
|
Powerhouse |
|
|
Powerhouse type |
Run-of-the river |
|
Number of units |
2 |
|
Design head (m) |
2.1x2 |
|
Installation capacity (MW) |
7.6 |
|
Mean annual generation (GWH) |
40 |
|
Diversion System |
|
|
Type of diversion system |
Tunnel |
|
Number of diversion tunnels |
1 |
|
Length of diversion system (m) |
450 |
|
Diameter of diversion tunnel (m) |
5.5 |
|
Discharge capacity of diversion system (m3/s) |
250 |
|
Power Tunnel |
|
|
Length of power tunnel (m) |
1022 |
|
Diameter of power tunnel (m) |
4.5 |
|
Water Conveyance Tunnel |
|
|
Length of water supply tunnel (m) |
1022 |
|
Diameter of water supply tunnel (m) |
4.5 |
|
Bottom Outlet |
|
|
Discharge capacity of bottom outlet (m3/s) |
47 |
|
Intakes |
|
|
Discharge capacity of irrigation intake (m3/s) |
7 |
|
Discharge capacity of drinking water intake (m3/s) |
1.05 |
|
Discharge capacity of power intake (m3/s) |
- |
|
Relocation Roads & Access Roads |
|
|
Length of relocation roads (km) |
12
|