黄河下游游荡型河道稳定水力几何形态研究  

Study on stable hydraulic geometry of wandering channel in the Lower Yellow River

作　　者：陈羿名 戴文鸿 刘军[4] 张天琪 CHEN Yi-ming;DAI Wen-hong;LIU Jun;ZHANG Tian-qi(I.Sote Key Laloruory of Hlydrology-Water Resources and Hydroulie Engineering,Nagjing 210098,China;College of Warer Conseruncy and Hydropover Engineering,Hohai Vnitrersily,Narnjing 210098,China;National Engineering Reseurch Center of Waler Resources fficient Urilizalion and Enginering Soafely,Hohai Unierity,Nanjing 210098,China;Taizhon River Dirersin Management office,Taichou 225321,China)

机构地区：[1]水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水利水电学院,江苏南京210098 [3]河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098 [4]江苏省泰州引江河管理处,江苏泰州225321

出　　处：《泥沙研究》2022年第4期46-52,共7页Journal of Sediment Research

基　　金：江苏省水利科技项目(2021020);国家重点研发计划项目(2016YFC0402501)。

摘　　要：采用稳定河道水力几何形态计算经验公式和3种典型的极值理论计算了黄河下游游荡型河道的稳定河宽和稳定水深。4种公式计算出的稳定河宽相近,可信度较高;最小弗劳德数法计算出的稳定水深偏大,而另外3种公式计算的稳定水深很接近,有较高的可信度。建立一维和二维水沙数学模型,计算了在2 670 m~3/s造床流量的持续作用下柳河口至夹河滩河段各断面的稳定河宽和稳定水深,结合经验公式和极值理论的计算结果,预测黄河下游游荡型河道演变至稳定状态时,平均河宽约为500~700 m,平均水深约为3 m左右。The stable river width and water depth of wandering channel in the Lower Yellow River are calculated by empirical formula and three typical extremal methods. The stable water depth calculated by “min Fr” method is too large, while the stable water depth calculated by the other three formulas is very close. The one-dimensional and two-dimensional mathematical models are established to calculate stable river width and depth of Liuhekou-Jiahetan Reach. Combined with the calculation results of empirical formula and extremal methods, predict that when the wandering channel in the Lower Yellow River evolves to a stable state, the average river width is about 500~700 m and the average water depth is about 3 m.

关 键 词：黄河下游 游荡型河道 河流演变 极值理论 河道形态 

分 类 号：TV147.3[水利工程—水力学及河流动力学]