Traditional finite element calculation of saturated seepage always takes permeability coefficient as a fixed value , actually the permeability coefficient of unsaturated soil appears to be in a non - linear function relation , and has close relation with volume moisture content and pore water pressure 摘要传统的有限元饱和渗流计算往往把渗透系数取作定值，而实际上非饱和土渗透系数呈非线性函数关系，与体积含水率、孔隙水压力密切相关。
By considerating the initial anisotropy of clay and keeping all the tests starting from k0 - consolidation , by removing the effect of the suction within the unsaturated soils , by reducing the cohesion , the author select saturated structural k0 - consolidated loess as the object of the paper 以原状饱和结构性k _ 0固结黄土为研究对象，考虑了土的初始各向异性，排除了非饱和土的吸力对结构性的影响，降低了粘聚力对结构性的影响，使排列成为结构性的主要影响因素。
The coupling analysis program of surface flow and subsurface flow over porous media is developed based on the conversion principles of water on the surface under rainfall conditions . a new method to judge the saturation of the surface is proposed in this thesis , the convergence is speeded up and the cpu time is saved by using this method 根据非饱和土上水的转化机理，编制了降雨条件下地表水入渗和产流耦合的计算程序，并根据土-水特征曲线，提出了判断地表饱和的条件，根据此条件，加速了收敛速度，节省了cpu的时间。
The effect of matric suction on the strength and deformation as well as water content of intact loess are studied in this paper . using the direct shear testing equipment and consolidation testing equipment and modified triaxial testing equipment in the university of logistical engineering in chunqing . 4 groups ( 16 specimens ) consolidated drained direct shear tests and 2 groups ( 6 specimens ) consolidated tests as well as 1 group ( 3 specimens ) triaxial shear tests with controling matric suction were conducted 用新研制的国内第一台非饱和土固结仪、国内第一台非饱和土直剪仪和经过改进的非饱和土三轴仪，做了4组16个非饱和土直剪试验； 2组6个非饱和土固结试验； 1组3个控制吸力的非饱和土三轴试验。
