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研究了闽江下游福州河段近年来河床变化对城市防洪安全的影响。根据历年大量水文、泥沙及河床地形及近两年大范围地形测量和水文测验资料进行数学、物理模型试验及演变分析,对福州河段南北港河床演变有了较全面的认识。北港窄深,分流比逐年增大.南港河床宽浅,从稳定性指标来看,具有游荡特性,枯水时断流。提出了闽江福州河段综合治理的原则,规划了能承受200年一遇洪水的防洪岸线,以及控制北港分流的方案,为全面治理该河段提供了决策依据.
The influence of riverbed changes on the flood control safety of Fuzhou reach in the lower reaches of the Minjiang River in recent years was studied. Based on a large number of hydrological, sediment and riverbed terrains over the years and large-scale topographic survey and hydrological test data in the past two years, mathematical and physical model tests and evolution analyzes have been carried out to make a comprehensive understanding of the riverbed evolution of the Nanbei Port in Fuzhou section. North Harbor narrow depth, the diversion ratio increased year by year.Nangang River bed width, from the stability of the point of view, with wandering characteristics, dry flow cut off. Proposed the principle of comprehensive management of the Fuzhou reach of the Minjiang River, planned the flood control shoreline that can withstand floods once in 200 years, and controlled the diversion plan of the North Port, which provided the decision-making basis for comprehensively controlling this reach.