IMPLEMENTATION AND EFFECTIVENESS OF PILOT PROGRAM OF JETTY CONSTRUCTION USING SAND PACKS ON THE YOTSUGOYA BEACH

Abstract

 This reports on the jetty work using sand packs, and verifies the effectiveness of the jetty work. The sand pack construction method uses bags made of ground fabric which combines high strength woven polyester fabric with artificial turf, filled with local sand or shore maintenance sand. By adopting a raised fabric that takes care of surface wear due to drifting sand and using canvas with anchor tubes for scouring of the foundation sand surface, it was possible to make the structure highly stable near the shore exposed to the waves. The coastal condition around the jetty work was continuously observed by surveillance cameras, and the effect of the jetty work was verified in one year and five months after construction.