关键词: 边坡长期变形, 整体安全度, 相互作用, 高拱坝

Abstract: On the base of abutment slope monitoring data of Jinping I Hydropower Station, the abutment slope long-term deformation tendency and stability are forecasted by using visco-elastic-plastic model. The displacement loading on the boundary of finite element model under dam and slope interaction is discussed, and the dam deformation and stress conditions under long-term slope deformation are analyzed to evaluate the influence of slope deformation on dam structure. The analysis of arch dam overloading capacity under long-term slope deformation is carried out to assess the dam safety margin. The results show that Jinping I Hydropower Station arch dam could withstand a certain range of left slope deformation, and the arch dam is characterized as a higher safety margin to slope deformation.

Key words: slope long-term deformation, integral safety degree, interaction, high arch dam