Abstract
Understanding of the mechanism of levee failures by a flood is important for flood risk managements. However, levee failures occurr in various modes and scales according to soil properties of the levee and ground foundation. In our recent studies, levee failure probability due to seepage and slope sliding has been estimated.
In this paper, quasi-2D seepage flow analysis method is developed in order to elucidate the seepage flow and pressure distribution within the levee and ground foundation. It is also used for estimation of the reduction of stability of the levee due to piping. It is clarified that the model developed can elucidate the risk of levee failures due to piping occurred at actual river levees.
