汛期水位变化下堤坝安全稳定性及险情防治措施分析  

Analysis on the safety of dike under the change of water level and the prevention measures of dangerous situation

作　　者：周清勇 胡国平[1,2] 洪文浩 ZHOU Qingyong;HU Guoping;HONG Wenhao(Jiangxi Provincial Institute of Water Sciences,Nanchang 330029;Jiangxi Engineering Technology Research Center on Hydraulic Structures,Nanchang 330029)

机构地区：[1]江西省水利科学研究院,南昌330029 [2]江西省水工安全工程技术研究中心,南昌330029

出　　处：《中国防汛抗旱》2020年第12期49-53,共5页China Flood & Drought Management

基　　金：江西省水利厅科技成果重点推广计划项目(201921TGKT13)。

摘　　要：堤身浸润线变化及堤坡稳定安全系数的研究是堤坝防汛的主要判别手段,其重点在于汛期水位骤升及高水位运行下堤坝的安全性。以二元混合堤坝为研究对象,采用有限元法分析堤坝在汛期水位变化情况下的渗流性态,进而分析总结在背水坡覆盖土层和地基透水土层坡降值大于允许破坏比降情况下出现险情时的处理措施。The study on the variation of wetting front line and stability safety factor of embankment slope is the main judgment basis of dam flood prevention,which focuses on the safety of dam under sudden rise and high water level operation in flood season.Takes binary mixed dyke as the research object,this paper uses finite element method to analyze the seepage behavior of dyke under the condition that the water level changes obviously in flood season,and then analyzes the treatment measures when the slope drop value of the backwater slope covering soil layer and the foundation permeable soil layer is greater than the allowable failure ratio drop.

关 键 词：堤防 渗流性态 稳定 险情 措施 

分 类 号：TV877[水利工程—水利水电工程] S423[农业科学—植物保护]