Author(s)

R. Naderer & G. Scharler

Abstract

Birecik Dam & HEPP on the Euphrates river in Turkey is currently the world's first major BOT scheme with an overall investment and financing sum of about DM 2.3 billion. The project includes a downstream river excavation with a length of about 12km and an excavation volume of about 12 million m\ with the aim of increasing the head available for energy production. At the design discharge of 1900 mVs the head can be increased for about 3.2 m, which makes more than 7 % of the total gross head. The topography of the natural river bed was transformed in a 3-dimensional model in CAD. After calibration of the backwater model for the natural river, the sensitivity of the tailwater elevations on the geometry of the excavation was investigated. Comprehensive cost-benefit studies were performed, varying all parameters of domin

Keywords