枢纽分散泄流对下游河道通航水流条件的影响研究——以景洪电站为例  

Effect of Dispersive Flood Discharge on Navigation in Flow Condition below Dam——Taking Jinghong Power Station for Instance

作　　者：方伟[1] 蒋孜伟 

机构地区：[1]重庆交通大学河海学院,重庆400074

出　　处：《浙江水利水电学院学报》2014年第3期13-17,共5页Journal of Zhejiang University of Water Resources and Electric Power

基　　金：国家自然科学基金(50879006)

摘　　要：应用平均水深有限元法平面二维水流数学模型,以景洪电站大坝泄流为例,采用流场一致判别标准,分析了大坝全断面泄流和分散泄流坝后流场的变化情况和流速的分布,得到了大坝分散泄流与全断面泄流流场趋于一致的最大沿程距,建立了泄流流量与最大沿程距间的关系式,确保汛期船舶的行船安全情况下,为大坝孔口泄流提供科学依据.Based on flood discharge of Jinghong Power Station,the horizontal 2-D depth- averaged flow mathematics model on the basis of the finite element method was used in this paper. Flood discharge considered two scheduling mode： full sec- tion and dispersion. Consistent flow field was selected to be the standard in analyzing the change of flow field below dam and velocity distribution below dam of both cases. With flow field consistent of two cases, the maximum distance along the river was got, and the relationship for discharge and the maximum distance along the river was derived. Under the situation of the safety of ship sailing in flood period, the scientific basis for flow discharge through dam orifice is provided in this pa- per.

关 键 词：大坝 分散泄流 坝后流场 数值研究 

分 类 号：TV131[水利工程—水力学及河流动力学]