EVALUATION OF FLOATING AND SLIPPING OF OIL TANKS BY TSUNAMI AND THE PREDICTION OF OIL SPILLED IN TOKYO BAY
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- MORINAGA Takayuki
- 大成建設株式会社 土木本部 土木設計部
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- MIKAMI Takahito
- 早稲田大学 理工学術院
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- SHIBAYAMA Tomoya
- 早稲田大学 理工学術院
Bibliographic Information
- Other Title
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- 東京湾における津波による石油タンクの安全性評価および油の移流拡散予測
- トウキョウワン ニ オケル ツナミ ニ ヨル セキユ タンク ノ アンゼンセイ ヒョウカ オヨビ アブラ ノ イリュウ カクサン ヨソク
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Abstract
The 2011 Tohoku Tsunami caused severe damage in coastal areas. In Kesennuma, oil spilled from oil tanks that was attacked by the tsunami. The present study aims to evaluate the safety of oil tanks against a tsunami and understand the behavior of spilled oil in Tokyo Bay. The results of tsunami numerical simulation with Keicho Earthquake scenario show that the tsunami reaches the oil tanks 95 minutes after the shock. The maximum inundation depth around the tanks is about 2.3 m. The oil tanks suffer damage when the storage rate of the tanks is less than 20 %. The amount of spilled oil is about 5000 kl. To understand the characteristics of oil dispersion and diffusion over the sea surface, the sensitivity of external forces on the behavior of oil is analyzed. The numerical results show that wind direction and wind speed give a significant influence on the oil spilling behavior. On the other hand, the influence of water temperture is small.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72 (2), I_433-I_438, 2016
Japan Society of Civil Engineers
