长江口鸭窝沙浅滩成因及演变规律

The Cause of Formation of Yawosha Beach at the Estury of the Yangtze River and the General Law of its Evolution

鸭窝沙浅滩扼长江口通海航糟的咽喉,1978年开始疏浚维护,辟为人工航槽。文章论证浅滩形成及不断恶化的原因及所采取的疏浚维护措施;并论证老航槽消亡、新航槽产生的周期性演变规律及确定新航槽选线的原则,和介绍新人工航槽的浚挖结果。

Yawosha beach is a throat passage at the estury of the Yangtze River opening to the sea,We startcd the dredging wcrk in 1978 for the purpose of forming an artificial channel.This paper gives demonstration to the cause of formation of beach and process of getting worse, as well as the conservaney work taken on. Th ere were periodic variations in the watercourses, with the old channel disappeared and the new ones generated.This artical intrccuees the prireipre of seuceting th new lines and gives the resuts of dredging works for the new artificial channel.