EFFECTS OF STRUCTURE ON DEPOSITION OF DISCHARGED SEDIMENT AROUND RIVERMOUTH

Proceedings of the International Conference on Coastal Engineering

Ichiro Deguchi¹  Toru Sawaragi¹ 

[1] Dept. of Civil Engineering, Osaka University

关键词: river mouth;    discharged sediment;    effects of structures;   

DOI  :  10.9753/icce.v21.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The influence of coastal structures on a discharged flow and a depositional pattern of discharged sediment from a river are investigated experimentally. It is found that a pair of offshore detached breakwaters, as well as a pair of jetties, had a little influence on them. The offshore detached breakwater has also a function to prevent rivermouth from filling up with depositional sediment by waves. A numerical procedure for the prediction of depositional pattern of discharged sediment is developed based on the experimental results. The proposed numerical procedure is shown to reproduce depositional patterns around a rivermouth without structures and a jetty-protected rivermouth satisfactorily. However, the flow pattern around the offshore detached breakwater-protected rivermouth can not be reproduced.

【 授权许可】

Unknown