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机构地区:[1]长江水利委员会设计院,湖北武汉430010 [2]湖北清江水电开发有限责任公司,湖北宜昌443002 [3]长江水利委员会长江科学院,湖北武汉430010
出 处:《人民长江》2009年第21期40-42,共3页Yangtze River
摘 要:对清江隔河岩水利枢纽大坝坝基变形监测成果进行了分析:认为施工期的坝基变形与大坝浇筑有关;运行期的变形与坝前水位有关,大坝经历了蓄水至204.37 m高程的考验,在超过设计校核蓄水位2.34 m运行工况时,坝基最大累计垂直变形约25 mm。虽然坝基岩层中存在软弱夹层和断层,沿夹层和裂隙的岩溶发育,位错变形不大,同时拱冠、拱座坝基变形明显。Based on the dam foundation deformation monitoring data of Geheyan hydro-junction at Qingjiang river,the follow conclusions are obtained: the dam foundation deformation in construction period is related with concrete pouring;the dam foundation deformation in operation period is related with upsteam water level.Historically,the dam used to withstand the challenge of water level at 204.3 m,2.34 m above check water level,and the maximum accumulated vertical deformation at dam foundation was 25 mm.Fault and weak intercalation were found in the dam foundation with karst developing along them,and dislocation between them was relatively small,however,the deformations at arch crown and abutment were large.
关 键 词:上重下拱 主要坝段坝基 变形特性 清江隔河岩水利枢纽
分 类 号:TV642[水利工程—水利水电工程]
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