长江中游戴家洲河段河床演变及碍航特性分析

River channel evolution and charichateristics of navigation-obstruction in Daijiazhou section in Middle Yangtze River

戴家洲河段为长江重点碍航浅滩河段,列入《长江干线航道发展规划》[1]重点治理对象和交通部《公路水路交通"十一五"重点建设项目前期工作计划》中。本文在研究该河段自然条件的基础上,主要分析研究该河段(巴河水道、戴家洲水道)演变特点、演变影响因素、演变趋势、碍航特性,为本河段治理提供科学依据。

The Daijiazhou section is a key shallow channel of navigation-obstruction in the Middle Yangtze River.It is listed in the key improvement project of ＂ Development Planning of Yangtze River Mainstream Channel＂and in the prephase working plan of key construction projects in＂the ‘Eleventh Five-year Plan’of highway and waterway traffic.＂Based on the research of natural conditions,the features,influencing factors,tendency of channel evolution of Bahe and Daijiazhou waterways,and charateristics of navigation-obstruction are studied in the paper,so as to provide the scientific basis for the improvement of the reach.