基于水动力模型的平原河网引补水研究

Study on water diversion and recharge of plain river network based on hydrodynamic model

对于平原河网而言,由于河道无长期径流补给,河道流动性一般较差。为提升河道流动性,保障河道自净能力,引水补水是必要手段之一。以南京市河西北部地区为例,通过构建区域河网一维水动力学模型,分析河道新增补水点位的流量分配,并对河道补水效果进行模拟。通过改变河道引补水模式,保障各条河道流量流速。

For the plain river network,as there is no long-term runoff recharge,the fluidity of the river is generally poor.In order to improve the fluidity of the river and ensure the self-purification ability of the river,water diversion and recharge is one of the necessary means.Taking the north part of Nanjing Hexi as an example,the flow distribution of the newly added water points in the river is analyzed by constructing a one-dimensional hydrodynamic model of the regional river network,and the effect of the river replenishment is simulated.By changing the water diversion and recharge mode of rivers,the flow rate of each river is guaranteed to be stable.