Turkey has become one of the fastest growing energy markets in the world. With a demand for electricity in that country expected to increase at an annual rate of 6% between 2014 and 2023, Turkey is looking to hydroelectric power to help fulfill the need. The Pervari Dam, planned on Botan Creek in the southeastern part of the country, will be one of the largest roller-compacted concrete (RCC) dams in the world.
The project presents a number of substantial challenges. This remote part of Turkey is situated in the East Anatolia seismic zone, where large earthquakes occur frequently. The dam will be located in extremely rugged terrain just downstream of two immense historic landslides measuring over 200 meters high. The slides were identified during the initial project feasibility study, and Schnabel was then called upon to evaluate their impact on the dam.
We conducted geological engineering field studies, as well as stability analyses of the landslides under static and dynamic loading conditions. Landslide stabilization measures could then be developed based on our analyses, addressing the concerns of many stakeholders. Schnabel also prepared the preliminary design for several portions of the Pervari Dam project including landslide stabilization measures, mix proportioning for the RCC gravity dam, hinged crest spillway design, and tunnel excavation geometry and design. We also evaluated seepage characteristics through the rock foundation and proposed seepage control measures utilizing SEEP/W. We used PLAXIS and CADAM to analyze dam stability.