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In this section the project is introduced in form of following items:
Intro
Targets
  • Increasing the hydroelectric energy generation of the country to annually 3700 million kw/hTargets
  • Preparing a winter excursion area and attracting tourists for amusement, visiting dam and water sports
  • Job-creating in time of construction and operation
  • Providing a part of the network power in peak load
  • Regulation of Karun River water
History and background
The preliminary studies about Karun catchmnet area was done by consulting engineer Corporation of Harza about fifty years ago. Feasibility studies of Masjed Soleiman dam was carried out and construction of current dam with the name of Karun 4 was recommended in an area with the name of Godarelandar. After Islamic revolution, Mahab Quads consulting engineers, with cooperation of Akers Corporation of Canada carried out some studies about the dam. Finally during the period of 1981-1986 Mashanir consulting engineers with cooperation of Lamayer Company from Germany completed the studies and proposed the current axis of Masjed Soleiman dam as the final axis. History & background of the project
The construction of water diversion system was started in 1991 and finished at the end of 1994. 19th July of 1995 the river was diverted into diversion tunnels. At the end of fall 1995, with completion of the upstream cofferdam, the construction of the dam was started in a dry area. After this process, equipping the site was started together with complementary studies about quarries. Then excavation and strengthening dam foundation began. The main part of the construction ended in 2000 and dam refilling with water was made possible in December 2000. Construction of hydraulic steel structure began in 1996 and completed according to the plan in 2001. Since fall of 1996 manufacturing of equipments of main powerhouse and switchyard began. After installation of the equipments of four units of the powerhouse, the tentative operation of the units successfully ended in October & February 2002 and July & November 2003.
Civil works of the development project began in the end of 1998 and after completion of excavation activities in October 2003, now concrete placement of water channels and powerhouse cavern has ended. Installation the hydro-mechanical equipment has begun in June 2003 and installation of turbine equipment has also begun in October 2003. It is predicted that tentative operation of the second 1000 megawatts is expected to finish in 2007.
Location and general layout
This project is located in Khuzestan in 160 kilometer north-east of Ahvaz and 25.5 kilometer north-east of Masjed Soleiman city.  Masjed Soleiman dam is located on Karun River in 26 kilometer downstream of Shahid Abbaspour dam (Karun 1).
River specifications
Karun river is the most watery and the longest river of Iran after Karkhe. Length of Karun River is 950 kilometer and its direction is generally north-west/south-east. This river is originated from Zagros moutains in Gotvand zone and enters into Khuzestan plain. The important branch of Karun is Dez River which is connected to Karun in north of Ahvaz. Karun River at the border of Iran and Iraq is connected to the Arvand River and heads toward Persian Gulf. Considering water discharge, this River is the greatest river of Iran.
Specifications of catchmnet area
Catchment area of Karun River is about 60000 square Kilometer. The annual long-term average discharge of Karun River at the site of dam is estimated about 362 m3/s. According to the carried out calculations, 1000-year-flood this area is about 11400 m3/s and the probable maximum flood is about 21700 m3/s.
Dam location
As it is shown in the following picture, Masjed Soleiman dam is constructed on Karun River, 26 kilometer downstream of the Karun 1 dam.
Dam location
Features
  • One of the highest rock-fill dams of Iran with the height of 177 meter from the foundation
  • Attraction the foreign capitals and use of low-interest loan of JBIC institute of Japan
  • Having the greatest spillway in country with the discharge capacity of 21700 m3/s
  • Using the most advanced technologies in power industry
       
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