| 摘要 |
PURPOSE: A tunnel type submerged breakwater block for erosion prevention is provided to prevent the movement and tipping up due to whirlpool or wave. CONSTITUTION: A tunnel type submerged breakwater block for erosion prevention(10) comprises a body portion(20), upper wing portions(211, 221), and lower wing portions(212, 222). The body portion is composed of concrete and formed into rectangular shape. The upper wing portions comprise lower incline(211a, 221a). The lower wing portion comprise upper incline(212a, 222a). |
