A Trial on Numerical Analysis of Liquefied Landslide with Water Inflow with Consideration of Mesh Size

抄録

On September 28, 2018, an earthquake in Indonesia generated large-scale landslides. These landslides may be caused by not only ground liquefaction, but also the groundwater inflow from the base layer. As a result of numerical analysis considering groundwater inflow, although the amount of deformation was smaller than the observation, it was succeeded to simulate large-scale deformation of the ground. However, there may be mesh size effects in the results of the analysis. Therefore, in this research, we tried to evaluate the mesh size effects in numerical analysis considering water inflow. As a result, the deformation of soil layers did not change even when the mesh size was finer. Also, by making the mesh finer in the depth direction, the displacement distribution was determined with higher resolution.