| 摘要 |
PURPOSE:To prevent snow cornice from being generated by arranging a plurality of avalanche preventing fences at the specified positions of snow cornice generation sections, and by arranging glide preventing structures between the mutual avalanche preventing fences. CONSTITUTION:Suspended fence type avalanche preventing fences A1, A2... are arrange don an inclined surface. Besides, between the avalanche preventing fences A1, A2, glide preventing fences B1-B3 are arranged at specified intervals. |
