2024-03-28T08:20:30Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00007770
2022-12-13T02:21:14Z
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THE RELATIONSHIP BETWEEN ICE JAM OCCURRENCE AND THE CROSS-SECTIONAL PROFILE OF ICE-COVERED RIVERS
結氷河川における河道形状を考慮したアイスジャム発生条件に関する研究
THE RELATIONSHIP BETWEEN ICE JAM OCCURRENCE AND THE CROSS-SECTIONAL PROFILE OF ICE-COVERED RIVERS
吉川, 泰弘
黒田, 保孝
伊藤, 丹
渡邊, 康玄
Ice jam
Ice-covered river
Hydraulics experiment
This study aims to clarify the relationship between ice jam occurrence and the cross-sectional profile
of ice-covered rivers. We carried out hydraulic experiments in a test channel that reproduced an icecovered
river. The test channel had four sections, each with a different river width and river bed slope.
The hydraulic conditions that were varied were ice sheet area, ice sheet discharge and flow discharge.
The research clarified the following. Ice sheets tend to deposit at places of great water depth and low
flow velocity. Ice jams are generated under the following conditions: large ice sheet area, high ice sheet
discharge and low flow discharge. Moreover, the relationship between ice sheet transportation and water
slope was inferred. The probability of ice jam occurrence can be estimated from the ice sheet’s Froude
number by using ice sheet thickness and ice sheet velocity. When the ice sheet’s Froude number is small,
the ice sheet velocity is low.
journal article
公益社団法人 土木学会
2014-06
application/pdf
河川技術論文集
20
241
246
https://kitami-it.repo.nii.ac.jp/record/7770/files/2014-06_結氷河川における河道形状を考慮したアイスジャム発生条件に関する研究.pdf
jpn