2024-03-28T19:07:43Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00007753
2022-12-13T02:21:14Z
1:86
遊水地による津波の河川遡上低減効果に関する水理実験
A HYDRAULIC EXPERIMENT ON EFFECTS ON RIVER RUN-UP A TSUNAMI REDUCTION BY A RETARDING BASIN
A HYDRAULIC EXPERIMENT ON EFFECTS ON RIVER RUN-UP A TSUNAMI REDUCTION BY A RETARDING BASIN
矢野, 雅昭
吉川, 泰弘
平井, 康幸
田中, 茂信
open access
c 2011 公益社団法人 土木学会
tsunami run up
retarding basin
hydraulic experiment
This study proposes a retarding basin to be constructed at a downstream site of a river to allow tsunamis to flow
through side-spill weirs into the retarding basin, lowering the wave height and energy as a measure of preventing
river run-up during a tsunami. In order to demonstrate an effect of a retarding basin, a hydraulic model experiment
was conducted. The river chosen for the experiment runs through Banda Aceh, an area devastated by the earthquake
in the Indian Ocean of Sumatra. A model of the river was created on a vertical scale of 1:50 and a horizontal scale
of 1:600. As a result, the retarding basin reduced the height of the tsunami by 1.5 cm (0.75 m full scale) at the point
of 1.2 m upstream from the retarding basin (720 m full scale). It could also delay the arrival time of the tsunami by
up to 0.35 seconds (30 seconds full scale). The duration of the tsunami’s high water level was reduced by up to 1.6
seconds (136 seconds full scale). And these reduction effects are proportional to amount of water flowed into the
retarding basin.
公益社団法人 土木学会
2011-07
jpn
journal article
VoR
https://kitami-it.repo.nii.ac.jp/records/7753
河川技術論文集
17
371
376
https://kitami-it.repo.nii.ac.jp/record/7753/files/2011-07_遊水地による津波の河川遡上低減効果に関する水理実験.pdf
application/pdf
1.8 MB
2016-11-22