深厚软土地基大坝变形观测分析及思考——以里墩水库为例  

Deformation Observation Analysis and Thinking on Deep Soft Soil Foundation Dams:A Case Study of Lidun Reservoir

作　　者：曾海英 金华辉 吴才华 ZENG Hai-ying;JIN Hua-hui;WU Cai-hua(YuhuanReserviorAdministration,Taizhou 317600,Zhejiang,China;Zhejiang Guangchuan Engineering Consultation Co.,Ltd.,Hangzhou 310020,Zhejiang,China;Yuhuan Xuanmenwan Tourism Agricultural Development Co.,Ltd.,Yuhuan 317605,Zhejiang,China)

机构地区：[1]玉环市水库管理所,浙江台州317600 [2]浙江广川工程咨询有限公司,浙江杭州310020 [3]玉环旋门湾观光农业开发有限公司,浙江玉环317605

出　　处：《浙江水利科技》2018年第6期47-49,57,共4页Zhejiang Hydrotechnics

基　　金：浙江省自然科学基金项目(No.LY13E090002)

摘　　要：为探究深厚软土地基大坝变形规律,以里墩水库为例,简述该大坝不均匀沉降病害及其原因,分析大坝变形观测资料。大坝蓄水前期沉降量远大于蓄水后期,上下游坝体沉降速率主要随库水位变化而变化,本次大坝沉降速率与库水位呈相反状态,大坝上游面二级平台左右岸相邻沉降点不均匀沉降差最大,产生裂缝的风险较大。提出深水区大变形坝基沉降观测仪器的方案,并获得仪器厂家的认可。Taking the Lidun Reservoir as an example, the paper studies the deformation rules of deep soft soil foundation dams, reviewing the differential settlement of the dam and corresponding causes, and analyzing the observation data of dam deformation. The settlement at earlier stage of water storage is considerably larger than that of the later stage. The settlement rate of upstream and downstream varies with the reservoir water level. The settlement rate of this dam is contrary to the reservoir water level, the uneven settlement difference is the largest at two adjacent settlement points of the secondary platform at upstream of the dam, where suffer from a greater possibility of dam cracks. A program of dam settlement observation device is proposed and recognized by the device producers.

关 键 词：大坝 深厚软土地基 变形观测 自动化改造 深水区 

分 类 号：TV698[水利工程—水利水电工程]