| Summary: | On the dams, there are many parameters may change and be different from design. Therefore, it is necessary to analyse the parameters so that it can comply with conditions in the field. By knowing the material parameters can foresee events in the future during operational condition of dam. It is because material parameters can influence behaviour of the structure. Displacement, one aspect in failure of dam, is considered due to its function to accommodate design of camber in dam crest and provide early warning system. Displacement behaviour is related to material parameters in term of Young’s modulus and Poisson ratio. Nevertheless, difficulties for testing material in the dam make approach method to analysis material parameters are required. One of them is done by numerical simulation. In this study, the review of displacement is in the core zone at different elevations and different water level conditions. Value of material parameters which influence displacement were determined using back analysis method. Then, it could be analysed displacement result between modelling and monitoring instrumentation using Settlement Gauge. Results show good agreement trend between those displacement’s results. Moreover, the displacement’s value from simulation model analysis is greater than Settlement Gauge.
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