摘要：Jinping I hydropower station is one of the most challenging projects in China due to its highest arch dam and complex geological conditions for *** geological investigation into the dam foundation,a few large-scale weak discontinuities are *** rock masses in the left dam foundation are intensively unloaded,approximately to the depth of 150–300 *** serious geological defects lead to a geological asymmetry on the left and right banks,and thus some major diffculties of dam construction are *** this paper,the influences of geological defects on the project are analyzed,followed by the concepts and methods of treatment *** on the analysis,the treatment methods of the weak rock masses and discontinuities are carefully determined,including the concrete cushion,concrete replacement grids,and consolidation *** work together to enhance the strength and integrity of the dam *** and calibrations through geo-mechanical model tests in combination with feld monitoring results in early impoundment period show that the arch dam and its foundation are roughly stable,suggesting that the treatment designs are reasonable and *** proposed treatment methods and concepts in the context can be helpful for similar complex rock projects.

摘要：Some super high arch dams (SHADs),like Xiluodu Arch Dam,after their heights reaching the magnitude of 300 m,confront lots of technical challenges in design and *** crucial technologies of 6 SHADs will be reviewed and discussed in this and consecutive papers,including Xiluodu,Jinping I in China,Baktiary in Iran,etc.,on the topics of the research method,criterion for evaluation and engineering application of dam safety analysis and evaluation,reasonable dam base interface,dam shape optimization,comprehensive treatments of complex foundation,anti-seismic engineering,dam construction material,concrete placement and temperature control,instrumentation and monitoring of dam operation,*** paper will mainly focus on the overall safety of SHADs,reasonable dam base interface analysis and evaluation and their engineering application.