| 摘要 |
PROBLEM TO BE SOLVED: To provide a tidal wave countermeasure structure easy of maintenance and quickly operable when tidal waves come, without regularly restricting the movement of people. SOLUTION: The tidal wave countermeasure structure 1 is provided on a sand beach 3, and it has a breakwater 5. Pits 11a as vertical holes are provided inside the breakwater 5. Moving columnar bodies 27a are movably provided in the pits 11a. Siphons 9 are connected to the pits 11a, and tubular flow paths 7 are provided in the siphons 9. The flow paths 7 pass through the sand beach 3 and their ends are exposed as water intakes 8 to the inside of sea 21. When tidal waves come and a water level near the water intakes 8 exceeds a siphon height 33, sea water flows into the siphons 9 and flows into the pits 11a. The moving columnar bodies 27a move toward A2 while receiving the buoyancy of sea water, and then they are exposed to the outside of the breakwater 5 to decay the energy of the tidal waves. COPYRIGHT: (C)2007,JPO&INPIT
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