摘要
分汊河段整治的核心问题为择汊,因为它的确定将派生和决定航道整治工程的总体平面布局,而布局的合理性是工程成败的关键。通航汊道的选择问题,实质上就是分汊河段的航线选择问题,不过它较单一河槽河型航线选择要复杂得多。研究认为通航主汊应选择分水多、分沙少、呈发展趋势的一汊,具体到实际滩段须从两汊的现状条件(如分流分沙、航道条件等)、航道尺度发展水域、河型特征等进行全面的对比,综合分析两汊各种利弊条件。在戴家洲河段汊道近期河床演变和碍航特征分析基础上,对该分汊河段的两汊优缺点进行分析总结,提出选择戴家洲直港作为该河段的通航主汊道。
The navigable channel selection is the key of channel regulation,because it determines the waterway regulation project layout,which is crucial to the success of the project.The navigable channel selection is more complicated than channel line selection of single-channel reach.On the basis of the alluvial process analysis and the characteristics of navigation-obstruction of Daijiazhou reach in the middle Yangtze River,the shortcoming and merit of two channels of braided reach are investigated respectively.The selection of navigable channel is discussed.The navigable channel is proposed.
出处
《水运工程》
北大核心
2012年第8期141-144,共4页
Port & Waterway Engineering
关键词
微弯分汊
河床演变
择汊
braided channel
alluvial process
navigable channel selection
