| 摘要 |
PROBLEM TO BE SOLVED: To provide a means capable of preventing an invader from being easily landed from a quaywall. SOLUTION: The invasion preventive fence is so constituted that a metal-made chain in a supporting body of an elastic body intervenes between rings so that both rings consisting of the chain can not be directly abutted on each other, a reticulated fence body is constituted of such a structural material that the inside diameter of each ring is filled with the supporting body, an interlocking rope is extended at a predetermined interval in the vertical direction of the stitch, a band providing a spacer with a predetermined height is wound on the inter circumferential surface, the lower part of a fence body is connected to the band and that the front end of the interlocking rope is mounted on the surface of the quaywall to stretch it. COPYRIGHT: (C)2006,JPO&NCIPI
|
