Proposed method for the hydraulic design of ski-jump energy dissipators in dam spillways, considering the occurrence of scour holes downstream of the structure.

Abstract

Ski-jump energy dissipators are widely used in hydraulic engineering because of their well-known effectiveness. Nevertheless, some uncertainty exits associated with the dimensions of the scour-hole appearing downstream of the structure. This paper presents a new method for solving this problem. This method includes spillway stability checking as part of the design process and also stability checking of any other construction near the energy dissipation zone.