| 摘要 |
<p>[Problem] To hold posts at fixed positions while maintaining the postures of the posts by a simple structure. [Solution] A pair of mountain-side stay ropes (32, 32) having a V-shape is stretched between a mountain-side slope and the post head of each of posts (20), a pair of valley-side oblique ropes (33, 33) having an inverted V-shape is stretched between a valley-side slope and the post head of each of the posts (20), a net body (31) which constitutes a guard net is restrained by a plurality of valley-side oblique ropes (33, 33), and a plurality of mountain-side stay ropes (32, 32) and the plurality of valley-side oblique ropes (33, 33) are connected to the heads of the posts to thereby hold the posts (20) at fixed positions.</p> |
