考虑地下水入渗的洪水演进模型构建及应用

Study on flood routing model and application considering groundwater leakage

近年来我国北方地下水埋深逐渐增加,在洪水演进中,地下水渗漏的可能性较大,从而对洪水演进可能产生较大影响。针对此问题,以小清河分洪区及其西部为研究对象,建立了考虑地下水入渗的洪水演进模型。利用该模型对小清河分洪区的设计标准洪水进行了模拟,分析了地下水渗漏对小清河分洪区、河北省部分区域的水位以及出口东茨村的水位和泄量的影响。模拟结果表明:地下水渗漏对小清河分洪区的洪水演进有较大影响。因此在小清河分洪区的调度运用以及治理规划时,需要充分考虑地下水渗漏这一重要因素。

In recent years, the gradual increase of groundwater depth may cause large proportion of leakage, which may influence flood routing obviously.For that reason, flood routing model considering groundwater leakage was established taking Xiaoqinghe flood diversion area and＆#39;＆#39;its west zone as study object.The model was applied to simulate the flood design-standard of Xiaoqinghe flood diversion area.Then the influence of groundwater leakage on flood level of the Xiaoqinghe flood diversion area in Hebei Province, and flood level of Dongcicun station, which is the exit of the flood diversion area, was analyzed.The study result indicated that groundwater leakage had great effect on flood routing in the Xiaoqinghe flood diversion area.Therefore, groundwater leakage must be considered sufficiently in flood control and manage, and construction planning.