重塑非饱和黄土渗透系数分段测量与验证

Segment Measurement and Verification of Permeability Coefficient of Reconstituted Unsaturated Loess

非饱和土的渗透性随着含水率的变化而变化,但是它与含水率之间的关系却很难确定。在前人研究的基础上,采用直接法和间接法研究了非饱和黄土在大中孔隙排水段和微孔隙排水段的渗透系数。结果表明,在此两段区域内,非饱和土的渗透系数可以通过间接法推导和直接法测量加以确定。

The unsaturated soil permeability decreases with the moisture content change,but the relations between them is difficult to determine.According to the previous research,the permeability coefficient of unsaturated heavy loess of large and medium pore drainage section and micro pore drainage section are researched by direct and indirect method.The results show that the permeability coefficient of unsaturated soil can be determined by indirect method and direct method measurement.