沙洲水道河床演变及航道整治方案

River bed evolution and channel regulation schemes of Shazhou waterway

根据长江中游沙洲水道近年来实测资料,分析水道河床演变特点及碍航特性,并根据长江航道治理规划,提出航道整治思路和方案。结合数学模型计算,对2个治理方案进行动床效果研究。模型计算结果显示:2个方案均可起到守护洲滩、控制左汊发展、维护右汊稳定的作用,均可达到预期的治理效果,但方案1略优,可作为推荐方案。

Based on the measured data of Shazhou waterway in the middle reach of the Yangtze River in recent years,we analyze the river bed evolution and navigation-obstructing characteristic of it,and according to the channel regulation planning for the Yangtze River,we propose the channel regulation idea and scheme.Combining with the mathematical model calculation,we carry out the mobile bed research on two regulation schemes.The results show that the two schemes can both guard the beach,control the left branch and stabilize the right branch,and achieve the desired regulation effect.However,scheme one is better,thus it is chosen as the recommended scheme.