A prediction for sand bar formation at the mouth of takase flood diversion channel, Japan

Nguyen Trong Tu, Hitoshi Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Takase Flood Diversion Channel is usually closed by a sluice gate to retain freshwater creating domestic water sources, and to prevent saltwater intrusion to the lake, at the end of the channel. Closed time of the sluice gate creates a good condition for sand bar formation at the channel entrance under the action of waves. Basing on the conditions of waves and water depth at the entrance of the Takase Flood Diversion Channel as well as combination with the classification of sand bar formation in the previous researches (Nguyen (2005), (2006) and Tanaka (2005)), a demarcation between emergence and submergence of sand bar formation was proposed via the dimensionless water depth at the mouth. This paper shows that emerged sand bar forms certainly at the channel entrance in the winter with a present river mouth depth. In order to limit influences of sand bar on the operation of the channel entrance, water depth at the entrance should be larger as a result sand bar forming under the water level, when sluice gate is opened, the flow in the channel could flush the bar easily.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages45-51
Number of pages7
ISBN (Print)9814287970, 9789814287975
Publication statusPublished - 2010 Jan 1
Event5th International Conference on Asian and Pacific Coasts, APAC 2009 - Singapore, Singapore
Duration: 2009 Oct 132009 Oct 16

Publication series

NameProceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009
Volume2

Other

Other5th International Conference on Asian and Pacific Coasts, APAC 2009
CountrySingapore
CitySingapore
Period09/10/1309/10/16

ASJC Scopus subject areas

  • Ocean Engineering

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