In this study, stability and behavior of the dam to static forces during construction and first impounding is analyzed and conclusions are being made using finite element method and computer programs. The analysis purposes are as following: 1) The analysis of hydraulic fracturing in clay core and interactions of internal zones, and consequently, the study of arching phenomenon inside the core. 2) Upstream and downstream slope stability analysis by determining landslide safety factors using calculated stress field in body and foundation of the dam. 3) Evaluation of pore pressure at the end of dam construction, and this analysis can be considered a basis for calculating the period of dam construction operations. In addition, by comparing Ru ratio resulted from stress-strain analysis, limit equilibrium assumptions are controlled. 4) Determination of the dam settlement during construction period for compensating horizontal profile drawdown that gives required information required for calculation of additional embankment. 5) Determination of settlement after construction and during operation of the dam. This value would be used for determination of camber. 6) Seepage analysis and study of drainage currents through construction materials and hydraulic equilibrium of dam and the volume of water drained from foundation and body of the dam according to the results of Lugeon test and steady state analysis for 6 months in filled and 6 months in semi-filled dam reservoir. The method used for computer analysis of strains during construction and first impounding is the effective stress method with respect to water-soil interactions (coupled mechanical-fluid model). For this purpose, Sigma/W stress analyzer component of GeoStudio 2007 software is employed.

Full text: IJEIR_1150_Final.pdf