This paper was written with the objective of introducing bank side erosion
and sediment transport equations into a simulation model of the outburst of
a landslide dam to improve the projection accuracy when the mass removal of
the soil occurs. The targeted model was applied to a drainage basin containing
a landslide dam. The following elements were calculated: the peak discharge,
the change of the river width, the rate of erosion, and the fluctuation of the
riverbed at the site of the landslide dam. It was concluded that the peak discharge
downstream of the landslide dam would be@PO@times the volume of the inflow.
Furthermore, the model was able to better express observed phenomena such as
how sites where the river width is narrow or flow volume large are eroded more
heavily. In the future, the authors intend to perform a sensitivity analysis
of this model to clarify its characteristics based on the supporting data, and
create a better sediment discharge forecasting system for the outburst of landslide
dams.