Log jam formation by an obstruction in a river

M. I. Rusyda, H. Hashimoto, S. Ikematsu

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

13 Citations (Scopus)

Abstract

The flume experiments were carried out to examine the relationship between a log jam and an obstruction in a channel. Cylindrical wood pieces and bridges with a single pier were used as a model of floating woody debris and an obstruction, respectively. The results reveal that a log jam at the model bridge is determined by shaded area of an obstruction in a channel. An empirical equation for predicting the volume of a log jam at an obstruction was proposed. A log jam at the model bridge caused backwater rise. Backwater rise depends on the number of wood pieces trapped by a model bridge. Dependence of loss coefficient on trapped wood pieces is clearly shown. Loss coefficient is determined by blockage ratio of a jam at a model bridge.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Fluvial Hydraulics, RIVER FLOW 2014
PublisherCRC Press/Balkema
Pages717-724
Number of pages8
ISBN (Print)9781138026742
DOIs
Publication statusPublished - Jan 1 2014
Event7th International Conference on Fluvial Hydraulics, RIVER FLOW 2014 - Lausanne, Switzerland
Duration: Sep 3 2014Sep 5 2014

Publication series

NameProceedings of the International Conference on Fluvial Hydraulics, RIVER FLOW 2014

Other

Other7th International Conference on Fluvial Hydraulics, RIVER FLOW 2014
CountrySwitzerland
CityLausanne
Period9/3/149/5/14

All Science Journal Classification (ASJC) codes

  • Nature and Landscape Conservation
  • Water Science and Technology

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