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Karst engineering studies at the Akköprü Reservoir area, southwest of Turkey

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Environmental Geology

Abstract

Akköprü Dam, which is under construction, is located at Dalaman Basin in the southwest of Turkey. The base rock at the Akköprü dam site and reservoir area is autochthon Aktaş limestone and Gökseki flysch formation. Allochthon Cehennem Deresi limestone, a complex series of ferro- (melange) and peridotite–serpentine units, overlay this unit with tectonic contact. These units are covered by young sedimentary series. The outcrops of karstified Aktaş limestone are observed at 2 km upstream of the dam site, at the right reservoir abutment. This unit is very permeable and the groundwater level is very deep, 100–116 m below the Dalaman riverbed. After impoundment, 250,000 m2 of this unit will be submerged. Groundwater which percolates in this unit discharges at the coastal springs. This study analyzed the watertightness of Akköprü reservoir related to the karstified limestone in the left reservoir bank and discussed possible options of remedial works to reduce seepage.

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Reference

  • Şekercioğlu E, Özgüler E (1999) Geotechnical investigations on leakage problems of Akköprü Dam, Turkey. Int. Commission on Large Dams (ICOLD), Antalya

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Acknowledgments

The authors express their gratitude to the General Director of State Hydraulic Works (DSI), Prof. Dr. Veysel Eroğlu, for permitting and supplying some of the data for this paper. The authors also thank the NTF Insaat Ltd Company, especially Mr Yaşar Eren, Mr Fırat Eren and Akköprü Dam Manager Mr İlker Akar, for their warm and friendly hospitality and also supplying some of the geotechnical data. Thanks also go to Mr Göksel Övül, geophysics specialist.

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Correspondence to Gültekin Günay.

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Günay, G., Milanović, P. Karst engineering studies at the Akköprü Reservoir area, southwest of Turkey . Environ Geol 51, 781–785 (2007). https://doi.org/10.1007/s00254-006-0395-x

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  • DOI: https://doi.org/10.1007/s00254-006-0395-x

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