Formation Analysis and Regulation Plan for Dredging Channel of the Three Sand Shoals (Fujiang Sand Shoal,Tongzhou Sand Shoal and Baimao Sand Shoal) on the Lower Yangtze River

The three sand shoals (Fujiang sand shoal,Tongzhou sand shoal and Baimao sand shoal) waterway on the lower Yangtze River are important obstacles for their shallow water depth to the month of that river.Along with the practicing of channel regulation of the month and utilizing the so\|called “gold waterway” of the Yangtze River effectively,it is urgently to regulate the three sand shoals.In this paper,river evolvment of Jiangyin\|Liuhekou watercourse where three sand shoal lain are analyzed,several main factors which effected those shoals are discussed integrated with the characteristics of reiver physical parameters and sand movement.The tendency to the waterway and the influence of the channel in the future are discussed.Based on these analyses a original plan is put foward to regulate these shoals to mett the need of the entrance of ocean going vessel.