| 摘要 |
PURPOSE:To enable to protect an afforestation set up on a slant from a damage caused by snow pressure, so as to preserve the afforestation by arranging a protective block which consists of a protective barrier erected in the center of a base formed in a half casing, just like enclosing each tree planted on the slant from the upper side. CONSTITUTION:A protective block A... which consists of a protective barrier 2 erected closely in the center of a base 1 formed in a half casing, in one body therewith, is arranged on the ground B just like enclosing each tree 5 planted on a slant from the upper side. Each protective block A is connected to each other by wire rope 9 and the end of the rope 9 is fixed on the ground B by an anchor structure 10. The protective barrier of the protective block can check a slide-down of snow accumulation and can prevent occurrence of an avalanche, and at the same time, can protect an afforestation from a big snow pressure brought from the upper side of a slant and also can preserve an afforestation. |
