Damages to River Dikes Due to Tsunami in South-central Coastal Area of Iwate Prefecture in 2011 off the Pacific Coast of Tohoku Earthquake
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- HARA Tadashi
- Science Research Center, Disaster Prevention Section, Kochi University
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- OKAMURA Mitsu
- Graduate School of Science and Engineering, Ehime University
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- UZUOKA Ryosuke
- Institute of Technology and Science, Tokushima University
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- ISHIHARA Yukihiro
- Scientific Research Section, Giken Seisakusho, Co., Ltd.
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- UENO Katsutoshi
- Institute of Technology and Science, Tokushima University
Bibliographic Information
- Other Title
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- 2011年東北地方太平洋沖地震における岩手県沿岸中南部の河川堤防の津波による被害の特徴
Abstract
Numbers of river dikes were damaged by the earthquake motion and tsunami in 2011 off the Pacific Coast of Tohoku Earthquake. This paper summarizes the damages on river dikes in middle and southern coastal part of Iwate Prefecture, with the intention of obtaining physical properties of embankment materials to mitigate the damage on river dikes due to tsunami. Damage configurations such as erosion and collapse were investigated along some rivers in the region of tsunami run up from the estuary. The spots, shapes, soil materials and the damage configurations of the river dikes are highlighted. Damages on embankments at the crossing with road bridges or railway bridges were also surveyed. These investigations have revealed that the river dikes protected with concrete facings will suffer less damage, and that even the three-face-armored banks will be subject to erosion in the upstream of the structures such as abutment or water gate.
Journal
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- Japanese Geotechnical Journal
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Japanese Geotechnical Journal 7 (1), 253-264, 2012
The Japanese Geotechnical Society
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Keywords
Details 詳細情報について
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- CRID
- 1390001205258109568
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- NII Article ID
- 130004482885
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- ISSN
- 18806341
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed