长江科学院院报2017，Vol.34Issue(12)：68-72,5.DOI:10.11988/ckyyb.20161358
南水北调中线挖方渠段渗控措施优化研究
Optimizing the Drainage System of Excavation Canal of the Middle Route Project of South-to-North Water Transfer in Expansive Soil Area
摘要
Abstract
Seepage field regulation is crucial for the stability of canal slope and liner plate along the middle route of the South-to-North Water Transfer Project,especially for stretches excavated in expensive soil area with high groundwater level.In this article,the seepage field of a typical section was simulated with 3-D finite element technology to investigate into the rationality and effectiveness of seepage regulation measures comprehensively.The distribution of seepage field was analyzed and the seepage control measures were compared.Results show that the uplift pressure on canal pavement would be reduced significantly by drainage cushion with drainage holes opening only when groundwater level is higher than the canal water level,by drainage cushion replaced by drainage board,and by drainage holes replaced with permeable joints of liner plate in addition.The differences in the three measures were compared,and their application conditions were discussed and corresponding suggestions were given.关键词
南水北调中线工程/挖方渠段/排水垫层/压力水头/渗控优化/数值模拟Key words
middle route project of South-to-North Water Transfer/excavation canals/drainage cushion/water pressure head/seepage field regulations/numerical simulation分类
数理科学引用本文复制引用
崔皓东,张伟,张家发,吴德绪..南水北调中线挖方渠段渗控措施优化研究[J].长江科学院院报,2017,34(12):68-72,5.基金项目
国家重点研发计划项目(2017YFC0405001) （2017YFC0405001）
国家自然科学基金项目(41402213) （41402213）
水利部公益性行业专项(201501036) （201501036）
中央级公益性科研院所基本科研业务费项目(CKSF2016021/YT,CKSF2017038/YT) （CKSF2016021/YT,CKSF2017038/YT）
