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Determination of Horizontal Deformation Monitoring Index for Powerhouse Dam of Feilai Gorge Project

According to the structural character of Powerhouse Dam of Feilai Gorge Multipurpose Project, this paper analyses the deformation regularity of the dam top of a typical dam section with the plane finite element method combined with strength reserve method. Then the horizontal deformation of the dam top of combination of different water level has been obtained. According a binary quadratic regression the model of the relation between the horizontal deformation of the dam top and the water level has been based, and the concrete data of this dam section has also been studied out. When the dam section runs and is being observing practically, these monitoring indexes of horizontal deformation can be consulted and provide important basis for monitoring the safe operation of the dam.