水利水电科技进展2012，Vol.32Issue(3)：6-9,4.DOI:10.3880/j.issn.1006-7647.2012.03.002
(复合)土工膜防渗土石坝饱和-非饱和渗流特性
Partial saturated seepage properties of (composite) geomembrane earth-rock dams
摘要
Abstract
In this study, the seepage field of earth-rock dams with impervious (composite) geomembrune was analyzed with the finite element method based on the full saturated and partial saturated seepage theory respectively. The variation of the dam seepage with different amplified thicknesses of the geomembrane was mainly studied. The relationship between the dam seepage Dux, the phreatic line and the magnification of the thickness was obtained by the calculations with regard to different permeability values of the dam body materials. The computational results based on the hill saturated and partial saturated seepage theories were also compared. The results show that the position of the phreatic line is significantly different in the equivalent zone and remains unchanged in the zone behind the geomembrane if the magnification of the geomembrane thickness is different and the seepage properties of the dam body material are identical. The dam seepage flux is correlated to the magnification of the geomembrane thickness and the permeability of the dam body materials. The seepage flux calculated with the full saturated seepage theory is greater than that with the partial saturated seepage theory.关键词
(复合)土工膜/土石坝/饱和渗流/饱和-非饱和渗流/等效算法/有限元模拟Key words
(composite) geomembrane/ earth-rock dams/ full saturated seepage/ partial saturated seepage/ equivalent algorithm/ finite element simulation分类
建筑与水利引用本文复制引用
岑威钧,王蒙,杨志祥..(复合)土工膜防渗土石坝饱和-非饱和渗流特性[J].水利水电科技进展,2012,32(3):6-9,4.基金项目
国家自然科学基金(51009055) （51009055）
中央高校基本科研业务费专项(2009B07514) （2009B07514）
