FIELD INVESTIGATION OF DURABILITY OF GRAVEL NET PLACED ON ARAI COAST

Abstract

 In 2002, beach was severely eroded in front of Hamana Bypass at the Arai coast located west of the Imagire-guchi Inlet of Lake Hamana, resulting in the exposure of the seawall protecting the highway against waves, and the possibility of the failure of the seawall increased. As a urgent measure, gravel net was installed along the seawall to protect the foot of the seawall. In this study, field observation was carried out around the gravel net to investigate the change in gravel net in 2016 when 14 years has passed after the installation of the gravel net.