Summary
The Oymapinar project which is now under construction is one of the most complicated projects in the world. Detailed studies were made in order to ascertain particularly the watertghtness of the formations outcropping at the damsite and in the reservoir.
The studies carried out at present describe the leakage paths, especially through the Paleozoic limestone corridor in the east side of the reservoir, the investigations, and geological-hydrogeological problems of the grout curtains. The Aygir reservoir curtain consists of 3 panels (Elv. 185-130, 130-43, 43-(−50, −80). The grout take of the completed upper panel is 0,14 ton per linear metre, for the middle panel 1,52 ton p.l.m. and 94,7 tons per point of total water loss. The designed part of the lower panel (Elv 43-„80”) was also completed. But a considerable amount of water (6–7 m3/sec) is still passing through the curtain.
In view of important amount of water crossing the curtain section, the Aygir curtain section must be considered as one of the key elements of the Oymapinar Project, which has a reservoir volume of only 300×106 m3.
Résumé
Le projet de la retenue d'Oymapinar est un ouvrage particulièrement complexe. Des études détaillées ont été faites pour évaluer plus spécialement l'étanchéité des formations qui affleurent dans le site et la retenue. Cet article présente particulièrement le cheminement des fuites dans le calcaire paleozoïque situé sur la côte orientale de la retenue et les recherches et les problèmes géologiques et hydrogéologiques posés par les voiles d'injection. Le voile du réservoir d'Aygir consiste en 3 panneaux (Elv. 185-130, 130-43, 43-(−50, −80). Les tonnages injectés pour le panneau complet supérieur sont de 0,14 tonne par mètre, pour le panneau intermédiaire, 1,52 tonne par mètre et 94,7 tonnes par point de perte totale. Le panneau inférieur du voile entre les cotes −43.00 et (−80.00) a été aussi achevé. Des débits importants de l'ordre de 6 à 7 m3/s. continuent néanmoins à traverser le voile d'injection. En raison des débits importants qui passent par la section de ce voile, cette partie peut être considérée comme un élément clé du projet d'Oymapinar dont la retenue a un volume de seulement 300×106 m3.
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Altug, S., Oymagrout, J.V. Study of leakage on the east side of the oymapinar reservoir, Turkey. Bulletin of the International Association of Engineering Geology 25, 117–124 (1982). https://doi.org/10.1007/BF02603202
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DOI: https://doi.org/10.1007/BF02603202