IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR Asia Pacific Division Proceedings : 19th IAHR APD Congress, Hanoi 2014 : Session 1: ENVIRONMENTAL HYDRAULICS : CHANGE of RIVER BED MATERIAL DUE TO FLOOD ON JULY 2009 AND LONG TERM RIVER BED VARIATION IN SABA RIV...
CHANGE of RIVER BED MATERIAL DUE TO FLOOD ON JULY 2009 AND LONG TERM RIVER BED VARIATION IN SABA RIVER, Japan
Author : KOJI ASAI (1), ATSUHIKO TAKASAKI(2) , KAZUMITSU MURAOKA(3)& HAKOBU YOROZU(2)
The Saba River passing through Hofu City, Yamaguchi Prefecture has many weirs. Recently, the planning to disuse and integrate weirs has been discussed in order to improve the conveyance ability in Saba River. In this paper, the effect of the removed and built weirs on the river bed elevation change in Saba River is discussed. Firstly, the effect of the flood in 2009 on the river bed materials is studied using the observation data. It is found from the observation data analysis that the mean sediment diameters become smaller than that before the flood in 2009. Secondly, the river bed elevation change for 60 years is studied with the numerical simulations. It is found that it takes the river bed elevation at least 8 years to be stable.
File Size : 562,175 bytes
File Type : Microsoft Word Document
Chapter : IAHR Asia Pacific Division Proceedings
Category : 19th IAHR APD Congress, Hanoi 2014
Article : Session 1: ENVIRONMENTAL HYDRAULICS
Date Published : 10/03/2015
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