长江口北港航道开发技术方案初步研究

On technical regulation program in the north channel waterway,Yangtze estuary

北港航道是长江口航道的重要组成部分,也是今后长江口航道发展的重点之一。历史上北港河槽形态河势较不稳定,但近10余年来,随着长江口深水航道治理工程、新浏河沙护滩工程及青草沙水库工程等的实施,北港边界条件趋于稳定,河势稳定性进一步增强,具备了良好的航道开发条件。在河势分析基础上提出北港航道整治开发的技术方案,包括堡镇沙护滩方案和双导堤加丁坝的拦门沙治理方案。数学模型计算结果表明,航道整治效果良好,辅以一定的疏浚措施有望实现航道规划目标。同时,对北港航道的开发前景进行了展望。

The north channel is an important part of the Yangtze estuary waterway,and the focus in the future as well.The north channel was less stable historically,but during the past 10 years,with the implementation of the Yangtze estuary waterway regulation project,New Liuhe bar beach protection project,and Qingcao bar reservoir project,the boundary condition of the north channel turned stable,and the regime stability was enhanced.Based on the regime analysis,we propose the technical scheme for the channel regulation,including Baozhen bar beach protection scheme and double leading dikes plus a spur dike.The mathematic model result shows that the regulation effect is satisfactory.The planned objective for the waterway can be realized with certain dredging measures.The prospect for the development of the north channel is also given.