摘要
航道边坡的稳定性是航道工程设计中最重要的问题之一,不同海域的动力条件对开挖航道疏浚边坡的稳定性有不同程度的影响。以连云港港区30万吨级航道为研究对象,采用三维潮流泥沙冲刷数学模型,研究了典型大风期间波浪与潮流动力对航道疏浚边坡稳定性的影响。计算及研究成果表明,在一场类似“韦帕”台风的大风作用下,波浪动力是连云港港区航道边滩冲刷的主导因素,航道沿线边滩冲刷较大位置位于近岸防波堤头部附近,最大冲深不超过0.07 m,疏浚边坡附近的冲刷深度由坡肩向坡脚迅速降低,大风天的潮流与波浪条件均不会对航道边坡的稳定性造成不利影响。
Slope stability of the channel is one of the most important problems in the design of channel engineering,the dynamic conditions in different sea areas have different effects on the slope stability of dredged channel.A 3D tidal current and sediment erosion model was established to study the influence of wave and tidal current on the slope stability of dredged channel during typical strong wind,which takes 300000 DWT channel in Lianyungang Port area as research object.The result shows that under the action of a strong wind similar to typhoon Wipha,the wave dynamic force is the main factor of beach face erosion near Lianyungang Port channel,the place with large erosion along channel is near the head of the breakwater,and the maximum erosion depth shall not exceed 0.07 m,the erosion depth near the dredged slope decreases rapidly from the shoulder to the toe,the current and wave dynamics during strong wind will not have adverse impact on the slope stability of the channel.
作者
丁琦
谢婕
谢军
DING Qi;XIE Jie;XIE Jun(Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China)
出处
《中国港湾建设》
2020年第4期15-20,共6页
China Harbour Engineering
