| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a large-span rockfall guard structure of high reliability excelling in respect of strength, function and construction and surely guarding against falling stones rolling down while bouncing on a slope even if posts are installed in a long span on the slope. Ž<P>SOLUTION: This rockfall guard net structure includes: a pair of posts erected in a vertically tiltable manner in the width direction of the slope; auxiliary posts provided to project in branch shape from the trough side of the posts; a wire net of shop curtain shape hanging down fitted to a main rope stretched between the head tops of the pair of posts; and a pocket-like wire net mounted to a main lateral rope stretched between the head tops of the auxiliary posts, and fixed at both width direction ends to the slope by ropes. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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