| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flood preventive structure capable of suppressing the depth of a storage groove, using a hardly breakable and simple configuration. <P>SOLUTION: A flood preventive structure 1 includes: a storage groove 2 buried underground with its top edge opening toward a ground surface; an inflow prevention slope 3 preventing water at a predetermined height or below from a ground surface GL from inflowing into the storage groove 2; an acceptance hole 8 formed at a position higher than at least the ground surface GL of the inflow prevention slope 3 to inflow the water into the storage groove 2; a waterproof plate 4 which has a buoyancy body 4c stored in the storage groove 2, in which its bottom edge is fixed rotatably to an upper portion of the storage groove, which rotates and stands up to prevent the water from inflowing into a predetermined area from the outside when the water is poured in the storage groove 2 and buoyancy is applied to the buoyancy body 4c; and a regulation body 5 for regulating the rotation by a predetermined angle or more of the waterproof plate 4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
