Dynamic Response Analysis for Rockfill Dam under the Condition of Different Valley

In this paper, by using the equivalent linearization method with the three-dimensional finite element numerical analysis software developed, Comparative analysis of the panel stress and acceleration under the conditions of different river valleys, the results show that: the more wide of river valley, the panel stress peak value, the greater the stress peak location is gradually moving towards the direction of the valley is slow, With widening valley, river on both sides of the dam binding force is abate, therefore affect smaller, so the dynamic analysis of the concrete face rock fill dam on the narrow valley must adopt the three-dimensional analysis.