| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a protection block capable of changing a traveling direction of energy of a tsunami and the like.SOLUTION: An outer fence of one protection block 1 is surrounded by permeable protective barriers 11 different in transmittance. The transmittance of the sea-side permeable protective barrier 11 is high, and the transmittance of the other permeable protective barriers 11 is low. Additionally, the protection block is partially configured in an opened manner without being provided with the permeable protective barrier 11. |
