EXPERIMENTAL STUDY ON BANK EROSION WITH VEGETATION DESTRUCTION

Abstract

 Better understanding of the process of bank erosion with vegetation destruction is an important issue for river dynamics. In this study, six cases experiments were conducted by changing the existence of vegetation, the density of vegetation and water level, in order to clarify how the bank erosion with vegetation destruction effect on river channel evolution. Particularly, we have applied the original making for vegetation model which destruct by river flow and topographic measurement of the laser displacement meter. In the result, it is resolved that the vegetation stops the bank erosion of upper side temporarily, and promotes a scour of underside bank. And after vegetation destruction, bank erosion restarts and widens channel intermittently.