CROSS SECTION DESIGN OF ARTIFICIAL TIDAL FLAT UTILIZING DREDGED SEDIMENT

Abstract

 Artificial tidal flat utilizing dredged sediment have been developed and the case studies to show its effectiveness have been reported. However, it is hardly to say that the artificial tidal flat has solved the problem of the decreasing in catch of asari clam in these days. It is desired to develop new technology of high puroduct of asari clam using dredged sediment for the estuary with severe decreasing in catch them. I Nutrient supply from dredged sediment and II high productovity of algae for feed are emphasized as the function of artificial tidal flat for asari clam. In this study, we have investigated the applicabilities of glanulated coal ash (GCA) as the tidal flat material to enhance the productivities of asari clam using dredge mud for the shallow place worring about the low neutrialnt condition. Aiming to develop the design method of tidal flat with the supply sourse of algae as the feed for asari clam, test tidal flat was installed in the inner area of Hiroshima bay and we evaluated the function of I and II of captioned tidal flat