2010•Journal of Tsinghua University(Science and Technology)Requires access
Potential description of rainfall free infiltration phase
Sijing Wang
Open publisher page 2 citations
Abstract
Suction variations during free infiltration greatly affects the flow properties.Existing infiltration models and unsaturated rainfall seepage numerical methods can not solve geological engineering seepage stability problems,and do not accord with the actual rainfall infiltration phase.Indoor rainfall free infiltration tests were used to measure the suction variations which accord with the Boltzmann function,with greater rainfall intensity leading to the faster suction changes.Soil water potential theory was then used to describe the free infiltration phase with a greater rainfall intensity leading to a greater unsaturated coefficient of permeability.This research provides a reference for engineering seepage for small rainfall intensities.