A Preliminary Study of Rainfall Infiltration on the Slope Using a New Coupled Procedure of Overland Runoff and Unsaturated Water - Gas Two Phases Seepage Model

摘要

Based on FLAC~(2d) with its built-in fish language, the coupled procedure of the overland runoff and the unsaturated water-gas two phases seepage model has been compiled. On the assumption that the slope surface is impervious, with the analytic solution of the overland runoff, the numerical solution has been investigated and with the example analysis, it is shown that in order to accurately assess the rainfall influence on the slope stability, the coupled boundary and the water-gas two phases flow should be taken into consideration in numerical simulation.