Double layer armor breakwater stability (case study: El Dikheila Port, Alexandria, Egypt)

This research aimed to investigate the armor layer stability of the new breakwater of El Dikheila Port. An undistorted physical hydraulic model with a scale of 1:39.73 was employed as a tool to simulate the existing and the proposed new breakwaters. The physical model was constructed in the wave basin of the Hydraulics Research Institute (HRI), Delta Barrages, Egypt. The armor layer of the new breakwater was tested with regular and random placement for the trunk and the roundhead. The damage occurs with wave height of 1.2Hs at the head and the trunk sections with the random placement case. The model results showed that regular placing exhibited higher stability for initial damage and gradual damage progression than the random placement of the armor units.