流域洪水模拟

The modelling of basin flood

通过对流域水流运动规律的分析，将流域的水流概化为调蓄单元的零维模拟、河道水流的一维模拟、行洪区水流的二维模拟、联系的处理及无资料径流的处理，对各部分的特点，采用相应的数值方法，统一进行求解，即构成了流域洪水模型．最后以淮河中下游段为试验区，进行了洪水还原计算，结果令人满意。

In this paper, the basin water flow is modelled with five types: 0-D model of storage cell, 1-D model of river flow, 2-D model on regions of flood relief,linker model of hydraulic-construction and runoff model of no information regions. According to their characteristics, some appropriate numerical scheme are adopted and the basin flood model is established, Finally the model is applied to a basin in middle stream of Huai He river to model the flood and the result is satisfactory.