Аннотация:At Mihono-Matsubara on the Shimizu coast, new measures against beach erosion which do not spoil the coastal scenery of Mt. Fuji from the shoreline were required since the designation of Mt. Fuji as the world culture heritage in 2013. In this study, the effect of some measures including L-shape groins against beach erosion was analyzed by numerical simulation using the contour-line-change model considering the grain size. The most effective measure was the installation of four L-shape groins with the sand back pass by a rate of 5×104 m3/yr from the north end of the sand spit.
