| 摘要 |
PURPOSE:To prevent the slip of wetted face by a method in which many flexible bar-like materials are erectly set on the wetted face, and fine grains are packed into the spaces between the bar-like materials. CONSTITUTION:Projected edges 1 are formed on the outside stepped edge portions of a stepped revetment. Many bar-like materials 3 are erectly set on the recesses 2 formed in the projected edges 1, and fine grains such as fine sand, are packed into the spaces. The slipping caused by seaweeds, etc., adhered to wetted face can thus be prevented. |
