%0 Journal Article
%A WANG Xiao-feng
%A SHI Hong-lian
%A WANG Zhen
%A WU Liu-dong
%T Segmented Simplified Model for Hydraulic Conductivity Curve of Unsaturated Soil
%D 2015
%R 10.3969/j.issn.1001-5485.2015.02.016
%J Journal of Yangtze River Scientific Research Institute
%P 72-77,83
%V 32
%N 2
%X <p>The soil-water characteristic curve is divided into four segments based on the main factors affecting the hydraulic conductivity coefficient of unsaturated soil. On this basis, a segmentation simplified model for hydraulic conductivity of unsaturated cohesionless soil with bad gradation was created. A complete predictive curve can be obtained just with a small amount of measured or calculated hydraulic conductivities of different moisture conditions. Curve of ln<em>K</em>-ln<em>&Psi;</em> at low matric suction(0&lt;<em>&psi;&lt;&psi;</em><sub>a</sub>)and curve of ln<em>K</em>-ln<em>&theta;</em> when <em>&theta;</em><sub>b</sub>&lt;<em>&theta;&lt;&theta;</em><sub>a</sub> are verified to be linear.</p>
%U http://ckyyb.crsri.cn/EN/10.3969/j.issn.1001-5485.2015.02.016