STABILITY OF BEACHES USING GROINS

Tojiro Ishihara, Toru Sawaragi

Abstract


The authors have conducted a field investigation on the stability of beaches, using groins along the Imazu and Sakano Coasts m Tokushima, Japan. Based on the survey of coastal configuration between groins and on the estimation of the amount of littoral sand drift in the case of no structure, the storage capacity of permeable and impermeable groins was determined. It is found that the groins have to be designed m types, length and intervals under the condition that the equal amount of littoral sand drift along the coast may be secured.

Keywords


beach stability; groin; Japan; littoral drift

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