Upper Kaleköy Dam and HEPP
Project’s Overview
The Upper Kaleköy Dam, with its hydroelectric power plant, is located on the Murat River, which flows through the outskirts of Bingöl city in eastern Türkiye.
The project embodied the construction of an RCC (Roller-Compacted-Concrete) gravity dam, which is 150 meters tall from the foundation and has a crest length of 517 meters. A volume of nearly 2,340,000 m3 of RCC aggregates was mined from an open-pit quarry to build the retaining wall of the dam, as well as an amount of 182,000 m3 of Conventional Vibrated Concrete (CVC) was required for a frontal water intake, constructed as an integral part of the RCC structure. An overflow 3-bay spillway is located on an excavated ground at the left abutment. It is controlled by 6 radial gates, and has a total discharge capacity of 8,800 m3/s.
Construction of the river flow diversion involved two (2) circular tunnels and upstream/downstream cofferdams with a (RCC) volume of 60,000 m3. These parallel tunnels, with longitudinal lengths of 846 meters and 951 meters, were excavated to attain a diameter of 11 meters respectively using conventional tunneling methods. Each one was further concrete-lined to an operating diameter of 9.5 meters.
The power plant is situated at the base of the dam. It is equipped with 4 steel-lined penstocks, encased in reinforced concrete, each 130 meters long, with an internal diameter 8 meters, built to carry water from the intake to the turbine-generator units rated at a capacity of 626 MW.
Cengiz Construction Company, and its joint venture (JV) lead partner Özaltın Construction Company, delivered to Kalehan Energy Company all civil works, six months earlier than the contractual requirement and within budget. The project started in 2012, and was completed in 2018.
providing Companies
Kalehan Energy