结合滦河下游闫庄铁矿工程防洪评价的具体要求，研究了如何运用数学工具进行河道建设项目的壅水分析计算问题。
Taking the iron mining project in Luan River as an example, the problem ofapplying mathematic tools to analyze and calculate the backwater by the channelconstruction projects is investigated.
滦河中下游地处河北省唐山、秦皇岛市境内，是河北省经济十分发达的地区之一，同时也是洪水灾害频发的地区之一。
The Luanhe River, which is located in Tangshan and Qinhuangdao cities of Hebei Province, is one of the developed areas in economy. The Luanhe River is also often hit by such disaster as flooding.
滦河中下游地处河北省唐山、秦皇岛市境内，是河北省经济十分发达的地区之一，同时也是洪水灾害频发的地区之一。
The Luanhe River, which is located in Tangshan and Qinhuangdao cities of Hebei Province, is one of the developed areas in economy. The Luanhe River is also often hit by such disaster as flooding.
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