淮河出海航道滩头整治工程平面方案分析

航道整治需抓住工程实施的有利时机,在通航条件还未恶化前提前预防。以淮河出海航道(红山头—京杭运河段)大淤滩整治工程为例,利用平面二维水流数学模型对滩头不同侵蚀方案产生效果进行计算,分析若不对滩头进行守护将可能导致的后果,说明滩头守护的必要性,并结合河床演变分析提出滩头整治工程平面布置方案。

Regulation layout plan of reach in Huaihe river to sea channel

The channel regulation should be implemented at appropriate time before the navigation condition is deteriorated.Taking the regulation of the Dayu beach in the Huaihe outfall waterway (Hongshantou to the Grand Canal section) as an example,various erosion schemes of the head of Dayu beach are calculated by a two-dimensional flow model.The consequences without protection at the head of the beach are analyzed which explains the necessity of protection.At last,combining with the recent river evolution,a beach regulation layout plan is proposed.This method may serve as reference for the decision-making of the regulation plan.