EXPERIMENTS ON DAMAGE OF A RICH-IN-NATURE TYPE OF REVETMENT WITH STEPS CAUSED BY RETURNING FLOW FROM THE HIGH WATER COURSE

Abstract

In this study, experiments were carried out on damage of a rich-in-nature type of revetment caused by returning flow from high water course with the oblique angle θ. In order to obtain guideline of the reasonable design of this type of revetment, the discharge and velocity profiles for critical condition of removal of cover materials were measured under the different values of θ by changing downstream water levels. Stability of revetment was also evaluated by measurement of the variations of revetment profiles in the failure process of revetment under high water condition.