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A STUDY OF ICE BREAK AND ICE FLOW DURING RIVER ICE BREAKUP
河川解氷時の河氷の破壊と流下に関する研究
A STUDY OF ICE BREAK AND ICE FLOW DURING RIVER ICE BREAKUP
吉川, 泰弘
渡邊, 康玄
早川, 博
平井, 康幸
Frozen Rivers
Mathematical Model
River Ice Breakup
River Ice Flow
It is important to clarify the formation, break and flow of river ice on frozen rivers. The aim of this study is to
clarify ice break and flow phenomena during river ice breakup, as these phenomena are the initial stages of ice jam.
With regard to the break of river ice, we developed a method of judging ice break by comparing the stress caused
by the flowing water and flowing ice, and the allowable bending stress of the river ice. The ice flow is expressed
using the continuity equation that considers the change in amount of ice, and the equation of motion that considers the
effect of the flowing water. This one-dimensional mathematical model showed that although there is a problem with
the reproducibility of ice jam, it is possible to reproduce ice break and flow phenomena by comparing the freezing
conditions from the results of the calculations, with those of aerial images of the actual river.
journal article
公益社団法人 土木学会
2011
application/pdf
土木学会論文集B1(水工学)
4
67
I_1075
I_1080
https://kitami-it.repo.nii.ac.jp/record/7882/files/2011-03_河川解氷時の河氷の破壊と流下に関する研究.pdf
jpn
http://doi.org/10.2208/jscejhe.67.I_1075
open access