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LEVEE FOR TSUNAMI COUNTERMEASURE, HAVING LEVEE CROWN PROVIDED WITH SLOPE
PROBLEM TO BE SOLVED: To reduce power of a tsunami by providing a straight or curved slope on a levee crown of a levee installed on the sea and below sea level.SOLUTION: A straight or curved slope is provided on a levee crown part 2 of a levee 1 by a form. A tsunami reaching a part 4 higher than a height part of the levee gets over the levee though the tsunami 3 reaching the height part of the levee can be prevented. However, since the levee crown part of the levee has the slope, a vortex flow 5 is generated behind so that force acts on the tsunami in a direction 6 to reduce power of the tsunami.
【課題】 海上かつ海面下に設置した堤防の天端に直線又は曲線で勾配を設けることで、津波の威力を低減させる。【解決手段】 堤防１の天端部分２に型枠で直線又は曲線の勾配を設ける。堤防の高さ部分の津波３は防ぐことができるが、それ以上の高さ部分４は堤防を乗り越えてしまう。しかし、堤防の天端部分に勾配があるため、後方に渦流５が生成されることで、津波に対し６の方向の力が働き、津波の威力が低減される。【選択図】図３
LEVEE FOR TSUNAMI COUNTERMEASURE, HAVING LEVEE CROWN PROVIDED WITH SLOPE
PROBLEM TO BE SOLVED: To reduce power of a tsunami by providing a straight or curved slope on a levee crown of a levee installed on the sea and below sea level.SOLUTION: A straight or curved slope is provided on a levee crown part 2 of a levee 1 by a form. A tsunami reaching a part 4 higher than a height part of the levee gets over the levee though the tsunami 3 reaching the height part of the levee can be prevented. However, since the levee crown part of the levee has the slope, a vortex flow 5 is generated behind so that force acts on the tsunami in a direction 6 to reduce power of the tsunami.
【課題】 海上かつ海面下に設置した堤防の天端に直線又は曲線で勾配を設けることで、津波の威力を低減させる。【解決手段】 堤防１の天端部分２に型枠で直線又は曲線の勾配を設ける。堤防の高さ部分の津波３は防ぐことができるが、それ以上の高さ部分４は堤防を乗り越えてしまう。しかし、堤防の天端部分に勾配があるため、後方に渦流５が生成されることで、津波に対し６の方向の力が働き、津波の威力が低減される。【選択図】図３
LEVEE FOR TSUNAMI COUNTERMEASURE, HAVING LEVEE CROWN PROVIDED WITH SLOPE
天端に勾配を設けた津波対策のための堤防
KURIHARA SHOJI (author)
2015-11-19
Patent
Electronic Resource
Japanese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
LEVEE COVERING UNIT, LEVEE STRUCTURE, AND LEVEE COVERING METHOD
| European Patent Office | 2022