Marun Storage Dam Project
Project Purpose / Layout
The primary purpose of the dam is to collect and store the Marun River in order to irrigate the plains of Behbahan Jaiza and Khalf Abad, generate electricity and control flood. The general layout of the project consists of Marun storage dam, Aryobarzan regulation dam and 50000-ha irrigation network.
Geographic Location
The dam site is situated in the southwestern Iran, 220 km to city of Ahvaz and 18.5 km to city of Behbahan in Khuzistan province.
Project History
Harza Company studied the project area in 1970s. Mahab Ghodss Consulting Engineering Company in association with a Romanian Company conducted the phase II study in 1980s. The construction began in 1967 and finished in 2003. The construction of the powerhouse started with delay and its second unit went into operation in 2015.
Specific Characteristics of Project
The dam site is located in a gorge that has the potential for construction of a concrete dam, but the priority was given to the earthfill dam because of the regional seismicity.
Technical Specifications of Project
|
Dam |
|
|
Dam type |
Rockfill dam with clay core |
|
Dam height above foundation (m) |
170 |
|
Dam crest length (m) |
345 |
|
Dam crest width (m) |
15 |
|
Dam body volume (m3) |
8450 x 103 |
|
Total reservoir volume (m3) |
1200 x 106 |
|
Active reservoir volume (m3) |
1000 x 106 |
|
Mean annual inflow (m3/s) |
50 |
|
Spillway |
|
|
Type of spillway |
Gate chute spillway |
|
Flood discharge capacity (m3/s) |
10000 |
|
Powerhouse |
|
|
Powerhouse type |
Semi-underground |
|
Number of units |
2 |
|
Design head (m) |
142 |
|
Installation capacity (MW) |
150 |
|
Mean annual generation (GWH) |
380 |
|
Diversion System |
|
|
Type of diversion system |
Tunnel |
|
Number of diversion tunnels |
2 |
|
Length of diversion system (m) |
1190 (640 & 550) |
|
Diameter of diversion system (m) |
13 & 10.7 |
|
Discharge capacity of diversion system (m3/s) |
6400 |
|
Power Tunnel |
|
|
Length of power tunnel (m) |
395.7 |
|
Diameter of power tunnel (m) |
7 & 6 |
|
Water Conveyance Tunnel |
|
|
Length of water supply tunnel (m) |
- |
|
Diameter of water supply tunnel (m) |
- |
|
Bottom Outlet |
|
|
Discharge capacity of bottom outlet (m3/s) |
500 |
|
Intakes |
|
|
Discharge capacity of irrigation intake (m3/s) |
140 |
|
Discharge capacity of drinking water intake (m3/s) |
- |
|
Discharge capacity of power intake (m3/s) |
140 |
|
Relocation Roads & Access Roads |
|
|
| |