西北地震学报2011，Vol.33Issue(z1)：214-217,222,5.
密度对非饱和粘土渗透系数的影响研究
Influence of Density on Permeability Coefficient of Unsaturated Soil
摘要
Abstract
Taking the soil from a landslide in Three Gorges Reservoir as a sample, experiments on the seepage of saturated soil and on the unsaturated soil-water character curve are done with different density of samples. Then permeability coefficients of unsaturated soils are deduced by the formula from soil-water character curve. And the relationship between permeability coefficients of samples with different densities and suction are gotten. The result shows that permeability coefficient decreases with suction increase nonlinearly. It is found that matrix suction has more effect on the permeability coefficient in the low matrix suction than in the high matrix suction. However, the effect of densities on the permeability coefficient exists along with the whole experiment process. And the relation between unsaturated permeability coefficient and density can be fitted with certain function model.关键词
非饱和渗透系数/土水特征曲线/基质吸力/干密度Key words
Unsaturated permeability coefficient/Soil-water character curve/Matrix suction/Dry density分类
建筑与水利引用本文复制引用
李小伟,王世梅,黄净萍..密度对非饱和粘土渗透系数的影响研究[J].西北地震学报,2011,33(z1):214-217,222,5.基金项目
三峡大学博士启动基金(KJ2009B027) （KJ2009B027）
国家自然科学基金重点项目(50839004):三峡库区三期地质灾害防治重大科学研究项目(SXKY3-2-1) （50839004）
