%0 Journal Article
%A CUI Hao-dong
%A ZHANG Wei
%A ZHANG Jia-fa
%A WU De-xu
%T Optimizing the Drainage System of Excavation Canal ofthe Middle Route Project of South-to-North WaterTransfer in Expansive Soil Area
%D 2017
%R 10.11988/ckyyb.20161358
%J Journal of Yangtze River Scientific Research Institute
%P 68-72
%V 34
%N 12
%X 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.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20161358