Abstract
Over a couple of past decades, many studies have reported the presence of soil pipes in hillslopes and its significant influences on rainfall-runoff processes. However there is no general simulation techniques to analyze pipe flow machanisms because of its complex flow dynamics and interation with water in the surrounding soil. This study proposed a numerical simulation model which combined a slot model with a two-demensional saturated-unsaturated subsurface flow model. To validate the model, three patterns of simulations (no pipe, an open pipe and a closed pipe) were conducted and showed reasonable agreement with the experiments.
