摘要
河口海岸山体凸体的冲刷坑最大深度及其形态,可以近似看作是在潮流作用下非溢流丁坝的坝头冲刷坑。已有丁坝坝头冲刷坑最大深度的计算公式未考虑往复潮流及含沙水流的作用,首次提出考虑悬沙含沙量的影响,同时对其冲刷坑形态提出了计算方法,经过对6个浙江省河口、海岸和海湾内凸体形成的冲刷坑最大深度及形态的验证,结果计算与实测值十分吻合。应用本文公式定量地解释了丁坝长度减少、含沙量年内变化和其他各因素变化对冲刷坑最大深度、形态等变化的定量影响。
The maximum depth and morphology of a convex （ a rock projecting over the water）in any estuary or along ang coast can be approximately considered as the scour pit of the groin in the stream. But the existing formulas for its calculation have not considered the effects of reversing tide current and the sediment concentration. This paper firstly considers both effects and gives a method to calculate the morphology. By taking six convexes along the estuary and coast in Zhejiang province asan example, the maximum depth and morphology have been calibrated. results are quite agreeable with field measurement by using formulas（ 4 ）, （ 6 ）, （8） in this paper. The formulas developed in this paper can explain and predict the variation of the maximum depth and morphology due to the change of groin length, sediment concentration, and other factors.
出处
《海洋工程》
CSCD
北大核心
2007年第2期78-83,共6页
The Ocean Engineering
关键词
海岸凸体
最大深度
形态
convex for estuary and coast
maximum depth
morphology
