Kinematic Wave Formulation for Flow Through Macroporous Soil

本研究的目的是研究具有双重孔隙度的土壤基质的入渗情况。这种二元性归因于与单个土壤颗粒大小一致的长度尺度上的微孔的存在，以及明显大于单个土壤颗粒的大孔隙的存在。主要的注意力集中在大孔隙上，因为通过具有微孔隙的均质土壤的渗透问题已经得到了一些成功的解决。该项目的成果将对土壤水力学的几个领域产生影响，包括农业应用、地下水补给、垃圾填埋层设计以及包气带中的污染物迁移。

The objective of this study is to investigate infiltration through a soil matrix possessing dual porosity. The duality is attributed to the existence of micropores at a length scale consistent with the size of individual soil grains, and macropores of a size significantly larger than an individual soil grain. Primary attention is focused on the macropores, as infiltration through a homogeneous soil with micropores has already been solved with some success. The project results will impact several fields of soil hydraulics, including agricultural applications, groundwater recharge, landfill cover design, and contaminant transport in the vadose zone.