If the infiltration intensity is less then the saturated permeability coefficient, the surface soil finally reaches to an unsaturated infiltration stage instead of saturated infiltration stage.
当降雨强度小于土体的饱和渗透系数时，表层土体达不到饱和状态，最终的稳定入渗只能达到一个非饱和入渗状态。
The analysis results also show that foundation pit tends to fail in anisotropic soil when horizontal permeability coefficient is larger than that of vertical.
对比各种分析结果，当水平向渗透系数大于竖向渗透系数时，基坑最容易发生渗透破坏。
Four kinds of amendments can improve soil physical properties. Soil bulk density decreased, soil porosity, permeability coefficient and field capacity increased under treatments.
四种改良剂均能不同程度的改善土壤物理性状，能降低土壤容重，提高土壤总孔隙度，加快渗透速度，增加田间持水量。
The method can be used for measuring the vertical saturation permeability coefficient of the soil outdoors quickly and accurately.
该方法可用于野外迅速准确的测定土壤垂向饱和渗透系数。
By using this model the soil-water characteristics and permeability coefficient of unsaturated soil are deduced and expressed in fractal dimension and air-entry value.
本文建立了土体孔隙分布的分形模型，导出用分维和进气值表示的水分特征曲线和渗透系数的理论表达式。
Different precipitation patterns and permeability coefficient of roadbed soil were analyzed by the calculation examples, the variation laws of changes of slope safety factor was summarized.
通过算例就不同降水模式、不同渗透系数的路基土进行对比分析，总结了边坡安全系数的变化规律。
The distribution law of pressure potential in saturated soil using two-ring infiltration method to determine the permeability coefficient was different to that using cutting ring method.
当采用双环入渗法和环刀法测定土壤的饱和渗透系数时，土壤剖面土壤水压力势分布规律不同。
Research results showed as follows: magnetic energy can make the soil specific surface reduce, permeability coefficient and fast netrogen of soil increase;
研究结果表明，在磁场作用下，土壤比表面减小，渗透系数增加；
Finally, the influence induced by variation of dynamic coefficient of permeability on soil displacement and stress under harmonic vibration load is investigated.
根据算例，研究了在周期荷载作用下，地基中的超静孔隙水压力、位移的幅值随动力渗透系数变化的一般规律。
The pore water permeability coefficient of unsaturated expansive soil is controlled by suction, cell pressure, dry density and degree of saturation of soil samples.
压实膨胀黏土水渗透系数受吸力、围压、干密度、饱和度等因素控制。
By orthogonal tests, the influence of three factors on the coefficient of permeability of soil-rock-mixture, the significance of different factors was determined.
通过正交试验确定了3种因素对土石混合体渗透系数的影响顺序及各因素的显著性水平。
By orthogonal tests, the influence of three factors on the coefficient of permeability of soil-rock-mixture, the significance of different factors was determined.
通过正交试验确定了3种因素对土石混合体渗透系数的影响顺序及各因素的显著性水平。
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