人民长江2025，Vol.56Issue(4)：192-199,8.DOI:10.16232/j.cnki.1001-4179.2025.04.026
白鹤滩水电站左坝肩边坡蓄水期稳定性分析
Stability analysis on left dam abutment slope of Baihetan Hydropower Station during early stage of impoundment
摘要
Abstract
The geological conditions at the left dam abutment slope of Baihetan Hydropower Station are complex with wide spread faults and dislocation belts.Combining with hydrogeological data and field monitoring results,we analyzed the deformation law and corresponding control factors of the left bank abutment slope during the impoundment period.The results showed that:①the maximum deformation occurred at the free side of the 800 m elevation downstream of the dam abutment,which was up to 17.2 mm.The slope deformation was mainly shallow deformation within 0～15 m,and the deep rock mass was less affected by impound-ment.② After impoundment,the shear deformation of the C3 and C3-1 interlayer staggered zones on the left bank and the LS3319 and LS331 intralayer staggered zones occurred.③ The deformation of the slope on the upstream side of the abutment groove was controlled by the reservoir water level,namely the underwater rock mass deformed towards the inside of the slope,and the rock mass above water creeped slowly towards the outside of the slope.The deformation of the downstream slope of the abutment groove is controlled by the weak structural planes,and the slope deformed to the outside and downstream side.Subjected to dam self-weight and arch end thrust force,the slope of abutment groove deformed towards inner mountain side.Compared with similar pro-jects,the deformation at the left dam abutment slope of Baihetan Hydropower Station is at a low level during the impoundment pe-riod,and the overall stability is good.关键词
坝肩边坡变形/拱肩槽/变形监测/控制因素/白鹤滩水电站Key words
slope deformation of dam abutment/arch dam abutment groove/deformation monitoring/control factor/Baihetan Hydropower Station分类
建筑与水利引用本文复制引用
谭尧升,俞钟杰,陈文夫,裴磊,荣冠..白鹤滩水电站左坝肩边坡蓄水期稳定性分析[J].人民长江,2025,56(4):192-199,8.基金项目
国家自然科学基金区域创新发展联合基金重点项目(U22A202432) （U22A202432）
中国长江三峡集团有限公司科研项目(BHT/0811) （BHT/0811）
