女川原子力発電所における津波評価に基づく防潮堤かさ上げ工事

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タイトル別名
  • The Raising of Tsunami-wall Based on Tsunami Evaluation at Onagawa Nuclear Power Plant
  • オナガワ ゲンシリョク ハツデンショ ニ オケル ツナミ ヒョウカ ニ モトズク ボウチョウテイカサ アゲ コウジ

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抄録

We re-evaluated the tsunami at Onagawa Nuclear Power Plant based on the latest scientific knowledge obtained from the 3.11 earthquake with both deterministic and probabilistic methods. As a result, we recognized that the maximum tsunami run-up height could be 23.1m above sea level with an annual excess probability of approx. 10-4. To keep the site ground away from tsunami effect and to secure enough safety margins for the defense in depth in case of emergency, we decided to raise the tsunami-wall up to 29m above the sea level and to deploy varied mobile equipment. The main structure of the 29m-high tsunami-wall is a steel pipe-type vertical wall (L=680m), and a cement improved soil embankment (L=120m).

収録刊行物

  • 保全学

    保全学 14 (4), 91-93, 2016

    日本保全学会

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