淮河干流吴家渡至小柳巷河段泥沙冲淤分析  

Analysis on erosion and deposition in Wujiadu-Xiaoliuxiang reach of the main stem Huaihe River

作　　者：虞邦义[1] 郁玉锁[2] 倪晋[1] 

机构地区：[1]安徽省.水利部淮委水利科学研究院安徽省水利水资源重点实验室,安徽蚌埠233000 [2]河海大学,江苏南京210098

出　　处：《泥沙研究》2009年第4期12-16,共5页Journal of Sediment Research

基　　金：水利部现代水利科技创新项目"淮河干流河相关系和整治方向研究"(XDS2007-1);安徽省人才开发基金资助(2008Z046)

摘　　要：采用输沙量法对淮河干流吴家渡至小柳巷段实测水文资料完整的20年进行年际变化分析,河段总体表现为冲刷。枯水年份河段输沙基本平衡或微淤;中水年份冲刷年多于淤积年;丰水年份总体表现为冲刷。丰水年和中水年的总体冲淤趋势取决于汛期,枯水年非汛期对全年冲淤影响较大。系统分析了河段冲淤与吴家渡站来流量以及年均来沙系数的关系。Based on 20-year observed data, the interannual variation of deposition/erosion in Wujiadu-Xiaoliuxiang reach of Huaihe River is analyzed using sediment balance method. It is shown that this channel is generally under erosion state. In low flow years, the channel shows equilibrium or slight deposition. The erosion amout is more than deposition during medium flow years, and the channel exhibits erosion almost in all high flow years. The deposition or erosion in the reach during high flow years and normal years is mainly determined by flood periods, but in low flow years by non-flood periods. Finally, the relation between deposition/erosion in the Wujiadu- Xiaoliuxiang reach and discharge, sediment concentration, incoming sediment coefficient at Wujiadu is systematically analyzed.

关 键 词：输沙量法 造床流量 排沙比 来沙系数 

分 类 号：TV142[水利工程—水力学及河流动力学]