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由于黄河大流量来水减少 ,中枯水历时增长 ,河道输沙能力降低 ,使河槽淤积日益加重 ,下游防洪、防凌形势十分严峻。黄河下游挖河固堤的目的是防洪减淤、规顺河势 ,利用挖出的泥沙对薄弱堤段进行加固 ,消除险点 ,提高堤防的抗洪能力。文中在介绍挖河固堤淤区布置的同时 ,重点对淤区泥沙特性进行了分析
As a result of the decrease of incoming large flow of the Yellow River, the dry and low water flow increased over time, and the sediment transport capacity of the river channel decreased. As a result, siltation of the river channel became more and more serious. The purpose of digging dikes and embankments in the lower reaches of the Yellow River is to flood control and siltation reduction, regulate river regimes, and reinforce weak embankments with dredged sediments so as to eliminate danger points and improve flood control capacity of dikes. In the paper, while dredging embankment dredging embankment layout introduced at the same time, focusing on silt sediment characteristics