北方平原城市雨水系统的优化设计

Optimization Design of Urban Rainwater System in North Plain

该文针对北方平原城市的地形地貌特征、河道水位顶托、夏季降雨集中以及雨水口的收水情况,对集流时间、汇水面积、径流系数、暴雨重现期、淹没流速、雨水口等几个市政雨水管网设计中的要素进行分析,提出了如何选取最佳取值,达到优化设计的目的。

In view of the topographical geomorphologic features of the north plain cities, the topping of river water level, the centralization of summer raining and the water collection of rainwater inlet, the article analyzes the essential factors of the centralizing flow time, catchment area, runoff coefficient, storm reappearing period, flooding velocity and rainwater inlet in the design of the municipal rainwater pipeline network, and puts forward how to select the optimized values to reach the objective of the optimization design.