Assessment of overtopping discharge over sea dyke by physical model tests

Abstract

    Base on the measured data of overtopping discharge on physical model and calculated theory, the results are compared with 3 types of section: Smooth slope section (1), vertical wall (2) and hollow perforated breakwater (TSD) (3) on the top of sea dyke in case of the same crest elevation. The results show that the overtopping discharge of section (1) is highest. The reducing of overtopping discharge of TSD increase when the perforation increase. And it also shows the wave interaction and overflow trend with TSD section are similar to smooth slope section, but the reducing of overtopping wave efficiency is close to the vertical wall section.