农村河道不同生态治理模式数值模拟  

Numerical simulation research on different ecological governance models of rural rivers

作　　者：胡乐[1] 谢梦瑶 刘晓璇 吴迪 高玉琴[2] HU Le;XIE Mengyao;LIU Xiaoxuan;WU Di;GAO Yuqin(Jiangsu Rural Water Conservancy Science and Technology Development Center,Nanjing 210029,China;College of water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]江苏省农村水利科技发展中心,江苏南京210029 [2]河海大学水利水电学院,江苏南京210098

出　　处：《江苏水利》2022年第8期35-39,48,共6页Jiangsu Water Resources

基　　金：江苏省水利科技项目(2020050)。

摘　　要：立足于平原区农村河道,运用MIKE11模型模拟河道在3种不同生态治理模式下的水位、水质变化规律,并应用于锡山区农村河道。模拟结果显示:研究区河道的污染源主要来自于底泥污染;模式1和模式3对应的生态治理模式下的排涝设计水位高于河道允许的最高过流水位;3种治理模式对河道水质的改善效果为模式3最佳,其后为模式1和模式2,对于同一污染指标,模式3的降解速率最大,对于同一模式,NH_(3)-N的降解速率最大。Based on the rural river channel in the plain area,the MIKE11 model is used to simulate the water level and water quality change rules of the river channels under three different ecological governance modes,and it is applied to the rural river channels in Xishan District.The simulation results show that:(1)the pollution sources of the river channels in the study area mainly come from sediment pollution;(2)the design water level of drainage under the ecological governance modes corresponding to Modes 1 and Modes 3 is higher than the maximum allowable overflow water level of the river channel;The improvement effect of water quality is:Mode 3>Mode 1>Mode 2.For the same pollution index,Mode 3 has the largest degradation rate,and for the same mode,the degradation rate of ammonia nitrogen is the largest.

关 键 词：农村河道 生态治理 MIKE11 数值模拟 

分 类 号：TV882.9[水利工程—水利水电工程]