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This paper discusses the engineering geological investigations, engineering properties of the rock mass at the dam site, and construction materials for the dam embankment. Kandil Dam is located in Kahramanmaras southeastern Turkey. It is used for energy production and water storage for irrigation. Engineering geological mapping, analysis of the discontinuity system, drilling, trial pitting, Lugeon water pressure tests and laboratory tests were undertaken. As a result of site survey and test results, three pervious and one impervious material quarries were identified. Rock mass classifications were performed in accordance with Rock Mass Rating (RMR) systems for the diversion tunnel. Bedrock in the foundation consists of amphibolites rated by the RMR method as 'good rock'. Based on evaluation of the site and laboratory data, two different quarries were selected for embankment fill materials. In addition, one impervious material quarry was located for cofferdam construction. [ABSTRACT FROM AUTHOR]

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Abstract  Recent examples show that strong earthquakes can cause damage to dams, notably tailings or hydraulic fill dams or relatively small earth fill embankments. Liquefaction is known to be one of the most dangerous consequences of the dynamic loading of an embankment dam and hence must be considered during the dam site selection and construction stages. This paper presents the liquefaction analyses undertaken for the Demir�z� dam site in Northeast Turkey. The liquefaction assessments are mainly based on field-performance data using SPT- and CPT-based methods in conjunction with the results of the available cyclic triaxial tests. The presence of a very shallow groundwater table, loose sandy layers and the seismic features of the region result in a high susceptibility to liquefaction. The results obtained from the SPT- and CPT-based criteria for evaluating the liquefaction potential are generally consistent and show that the thickness of the liquefiable layers increases in the area between the left bank and the central part of the proposed dam. Further studies are required to evaluate the suitability and efficiency of measures which could be taken to avoid liquefaction-induced problems at the dam site. [ABSTRACT FROM AUTHOR]