Simulated effect of soil depth and bedrock topography on near‐surface hydrologic response and slope stability

摘要: This paper explores the effect of hillslope hydrological behavior on slope stability in context transient subsurface saturation development and landslide triggering. We perform a series virtual experiments to address how topography affects location spatial pattern slip surface pore pressure dynamics. use 3D Darcy–Richards equation solver (Hydrus 3-D) combined with cellular automata model simulate propagation destabilized area. Our results showed that soil–bedrock interface particular, bedrock depressions, played key role dynamics, acting as an impedance for downslope drainage perched water. Filling spilling depressions microtopography induced localized zones increased head such pore-pressure fields—not predictable by topography—lead rapid propagation. work suggests models should consider order include connectivity component mathematical description processes operating at scale. Copyright © 2012 John Wiley & Sons, Ltd.