Project Title : Tangab Reservoir Dam (Rockfill Dam with Oblique Clay Core)
|
|
Location : Iran - Fars |
Status : Completed - Dam |
Start Date : Contract No.1 2002 Contract No.2 2008 Contract No.3 2012 Contract No.4 2014 |
End Date : Contract No.1 2008 Contract No.2 2012 Contract No.3 2014 Contract No.1 2015 |
Technical Specifications : Height of dam from foundation: 55 m Length of crest: 270 m Earth works: 2,300,000 m3 Steel works: 5,000 ton Concrete: 120,000 m3 Diversion system consists of two earth filled cofferdams (as parts of dam body) and diversion tunnel Length of diversion tunnel: 330 m Lateral spillway with ogee Ogee length: 150 m Grouting galleries: 2,800 m Cutoff wall: 3,600 m2 Water curtain and consolidation grouting: 180,000 m |
Employer Fars Regional Water Authority Engineer Ab-Niru Consulting Engineers Total Updated Contract Prices 115,000,000 USD Reservoir Volume 180,000,000 m3 Annual Water Discharge 120,000,000 m3 -------------------------------------------------------------------------------------------------- Prices 201,000,000 USD
|
Description :
This dam located at 90 km south east of Shiraz city near Firouzabad town, over Firouz-abad River. Main purpose of the project is supplying irrigation water to Firouz-abad area. Unique experience In this project a special method has been used for water tightening foundation. It has been construction of the water curtain involving drilling parallel boreholes in order to wash the fine compacted soil particles out of fractured and fissured rock and the alluvium layer between the bottom of the cut-off wall and the bedrock. Another useful and time-saving technique utilized in the project was the excavation of a 770 meter long grouting gallery about 40 meters under the river bed to be used for drilling the upward boreholes for washing out the fine particles. The gallery was also used for grouting cement grout through the alluvium. |
|