NUMERICAL INVESTIGATION ON IMPROVEMENT OF ARTIFICIAL REEF ON HAMAJU COAST IN FUKUI PREFECTURE

Abstract

 A method for enhancing sand deposition effect of the artificial reef constructed on the Hamaju coast was investigated using the BG model (a three-dimensional model for predicting beach changes based on Bagnold's concept). Because it was considered that the shoreward currents on the reef should be reduced for mitigating beach erosion shoreward of the reef, a high crown type was proposed. Using this type, we can reduce the wave transmission coefficient and improve sand deposition effect.