连岛坝形成规律及其在港口建设中的应用

在沙质海岸上,当波浪以某一角度向岸行近时,使岛堤(或礁石、岛屿)后岸线发生演变。本文以对岛堤后淤积沙咀的成因和规律以及形成连岛坝的发展过程进行了较深入的研究,且为友谊港的平面规划设计提供科学依据。     

SOME LAWS OF TOMBOLO FORMATION AND THEIR APPLICATION IN HARBOUR CONSTRUCTION

On sand beach, the coastline undergoes evolution behind detached breakwater (reef, island) when waves approach coast in a certain angle. This paper, which provides a scientific basis for plane planning and design of the Friendship Harbour, thoroughly discusses the law and cause of formation of accumulated sand spit formed behind the detached breakwater and the developing procedure of the tombolo's formation.     

努港突堤上游淤积年限计算

沙质海岸在斜向波浪作用下将产生沿岸水流及沿岸输沙。因此,若在沿海岸修筑沿岸建筑物必然会破坏该地区的输沙动态平衡,发生明显的局部岸滩变形。本文应用Pelnard-Considere单线理论模式,通过物理模型试验等方法确定了有关计算参数,对毛里塔尼亚的努瓦克肖特港突堤上游的淤积岸线及淤积年限进行了计算,其结果可供港口建设等部门参考。