关键词: 抗滑稳定, 拱座, 抗力体, 岩体渗透性, 地质缺陷, 超高拱坝

Abstract: In this paper, the main engineering geological problems of anti-sliding stability of arch abutment and resistance body of super high arch dams in China are studied. The research mainly contains the anti-sliding stability of abutments, the bottom slip surface and the lateral slip surface and slip combination model, the structural plane parameters, the analysis and treatment of the geological defects of the resistance body, the influence of groundwater and permeability of the rock mass for six super high arch dams, i.e, Ertan, Jinping I, Xiluodu, Dagangshan, Laxiwa and Xiaowan Hydropower Stations. The experiences of anti-sliding stability analysis and defects treatment of arch abutment and resistance body are also summarized. It can provide a reference for the similar projects in future.

Key words: super high arch dam, anti-sliding stability, permeability of rock mass, arch abutment, resistance body, geological defects