Record and Technique Succession of Crisis Response for Numappara Dam Water Leakage on The 2011 Tohoku Earthquake

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  • 平成23年3月東北地方太平洋沖地震沼原ダム災害対応記録
  • ヘイセイ 23ネン 3ガツ トウホク チホウ タイヘイヨウオキ ジシン ヌマ ゲン ダム サイガイ タイオウ キロク

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On 11th March 2011, the 2011 Tohoku Earthquake occured. The Earthquake caused some cracks, total length of which reached to 1,547m, in the asphaltic facing of Numappara Dam which J POWER owns. After the earthquake, water leakage through the cracks increased and then the dam water level was drawn down immediately in control. We just managed to succeed in the crisis response of the reservoir water leakage and it is greatly desiable to share empirical knowledge for possible crisis management in the future. With such a backgroud, we have edited the “Record of Crisis Response in Numappara Dam on the 2011 Tohoku Earthquake”. This paper shows the outline of the damages, our actions taken just after the earthquake and konwledge learned from this crisis.

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