GEOTECHNICAL ROCK-MASS EVALUATION OF THE ANAMUR DAM SITE, TURKEY

This paper describes a feasibility-level geotechnical evaluation carri ed out at Anamur dam site, in terms of stability analysis of dam found ation, excavation slopes and a diversion tunnel. The proposed Anamur d am will be built across the Anamur river on the Alanya metamorphic ser ies which consists of phyllite, schist and slate units at the site. Ge otechnical investigations included drilling for core, pumping tests, s ampling for laboratory testing, and a detailed discontinuity survey. U niaxial compressive strength, density, triaxial compressive strength a nd direct shear tests, have all been carried out in the laboratory. Di scontinuity data are processed for the determination of dominant sets and for the rock mass characterization in terms of classification syst ems. Evaluation concentrated on kinematic analysis in slope stability, Goodman's bearing capacity approach in foundation stability and rock mass classification for diversion tunnel stability assessment. The geo technical evaluation of the proposed dam and reservoir site establishe d that there will be no stability problems. Detailed geotechnical inve stigations are required for the final design of this project.