Ilısu Dam and HEPP Project

Engineering and Consultancy Services of Ilisu Dam and HEPP Project provided by Rast Engineering comprises the following:

  • Preparation of final design updates
  • Review of guideline and application drawings
  • Site supervision of works including main dam, power intake, power tunnels, spillway, power house and diversion structures constructions

Ilisu Dam and Hydroelectric Power Plant Project, which is the last step of main features of the South Eastern Anatolian Development Projects such as the Atatürk and Keban Dams, is located within the provincial border of
Mardin. With Ilisu project, Tigris river flows are going to be routed producing 3833 GWh annual energy with installed capacity of 1200 MW.
Diversion System: Diversion system designed to divert Tigris river enabling riverbed construction activities involve; Clay core U/S coffer dam of 700 m crest length and 130 m height with 1.050.000 m3 rockfill volume, clay core D/S cofferdam with 550.000 m3 rockfill volume, 3 diversion tunnel each 1 km length discharge capacity of which is 6.200 m3/s.
Spillway: Spillway is designed with 6 radial gates with maximum discharge capacity of 14.727 m3/s. 9.000.000 m3 of total excavation including 1500 m discharge channel have been finished.
Concrete Gravity Dam: Concrete gravity dam, which is composed of two segments as one on the right bank of spillway and other between spillway and Concrete Face Rockfill Dam (CFRD) is connecting the main dam to right bank. Total concrete volume of two segments including transition structure to main dam is 256.000 m3 with 400 m crest length.
CFRD: Main dam of the project, which is designed as Concrete Face Rockfill Dam (CFRD), is the 2nd largest in Turkey and largest over Tigris River with total 24.500.000 m3 rockfill volume. In addition, total amount of concrete structures at main dam as of plinth, face slabs, curb wall and parapet wall is 192.000 m3.
With 1200 MW installed capacity generated from 6 units of each 200 MW, Ilisu HEPP is going to be the 4th largest HEPP in Turkey. Producing 3833 GWh annual energy, project has been planned to supply 400 million USD of annual income.

Client

General Directorate of State Hydraulıc Works (DSİ)

Scope

Construction Supervision Services

Location

Mardin/Turkey

Year

2007-ongoing

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