长江下游口岸直水道落成洲守护工程平面方案优化

发布时间：2018-01-04 17:41

本文关键词：长江下游口岸直水道落成洲守护工程平面方案优化　出处：《水运工程》2014年09期 　论文类型：期刊论文

【摘要】：口岸直水道是长江南京以下12.5 m深水航道上延的必经之路,其上段落成洲守护工程的实施将为本水道总体治理方案的实施奠定基础。在综合河段河床演变特点和方案效果的基础上,利用物模、数模、局部概化三维物模试验对工程方案平面布置进行了优化并形成了优化推荐方案。研究表明,优化推荐方案的实施,将有利于维持口岸直水道上段目前相对较为有利的滩槽格局,抑制落成洲洲头和右汊发展的不利变化趋势。工程能够达到本期守护工程目标,局部冲刷较小,与后期方案衔接较好。并且在其基础上实施的12.5 m深水航道治理总体方案对口岸直水道航道条件改善明显。工程平面优化方案合理,可为落成洲守护工程设计提供参考。工程实施2年来的效果分析表明:本工程很好地守护了落成洲洲头,遏制了落成洲多年来冲刷后退的不利趋势。
[Abstract]:The port is the only way which must be passed straight channel of Nanjing Yangtze River below 12.5 m deepwater channel extending, the implementation of paragraph delta project will protect to lay the foundation for the implementation of the overall control scheme of the channel. Based evolution characteristics and methods in riverbed, using physical model, mathematical model, local generalized three-dimensional physical model test the project layout is optimized and the formation of optimization recommendations. Research shows that the implementation of the optimization recommendations, will be conducive to the maintenance of the Waterway Port straight currently relatively advantageous trough pattern, fall into the development trend of inhibition of adverse changes in head and right branch of the delta delta. The project can reach the goal of the project to protect local scour, smaller, better convergence and the later scheme. And on the basis of the implementation of the 12.5 m deepwater channel regulation scheme of straight port waterway conditions improved significantly. The project layout optimization The scheme is reasonable, which can provide a reference for the engineering design of the fall island. The implementation analysis of the project in the past 2 years shows that the project has well protected the landing area, and has blocked the unfavorable trend of scouring and retreating for many years.

【作者单位】：长江航道规划设计研究院;
【分类号】：U617
【正文快照】： 口岸直水道位于长江下游南京——浏河口河段,是长江口12.5 m深水航道上延的必经之路,水道内存在上下2个浅区。按照“总体规划,分布实施”的建设思路[1],将先期实施条件成熟、起到关键作用的守护、控制工程。其中,口岸直水道下段已于2010年开始实施鳗鱼沙心滩头部守护工程,而口

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