大洪水时黄河下游河道冲淤规律  

Law of Scour and Fill of Channel in the Lower Yellow River During Major Flood

作　　者：李远发[1] 武彩萍[1] 朱超[1] 任艳粉[1] 

机构地区：[1]黄河水利科学研究院水利部黄河泥沙重点实验室,河南郑州450003

出　　处：《人民黄河》2010年第12期35-36,共2页Yellow River

摘　　要：以几场较大洪水过程为例,总结了黄河下游不同河段大洪水时的水沙特征,对大洪水时下游河道的冲淤规律进行了分析。结果表明:黄河下游洪水的来源区不同,洪水含沙量差别很大,洪水峰型组合和"胖"、"瘦"程度也不同;花园口站洪峰流量为8 000～15 000 m3/s时,下游各河段冲淤强度变化不大,但随着洪峰流量继续增大,铁谢—高村游荡型河段和高村—艾山过渡型河段洪峰期冲淤强度与花园口站最大洪峰流量呈正比关系,艾山—利津弯曲型河段冲淤强度与花园口站最大洪峰流量呈反比关系。The paper summarizes the silt-discharge character in major floods at different reaches of the lower Yellow River and analyzes the law of scour and fill of the lower channel in major floods by taking several major floods as examples.The outcomes show that a) the flood source area of the lower Yellow River is different,great difference of sediment concentration and different combination of flood peak types;b) when peak discharge is 8 000 to 15 000 m3/s at Huayuankou Station,there is no big difference for scour and fill intensity at each reach of the lower channel.While as the continuous increase of peak discharge,the scour and fill intensity at Tiexie-Gaocun wandering reach and Gaocun-Aishan transitional reach is in direct proportion with the maximum peak discharge of Huayuankou Station and the scour and fill intensity at Aishan-lijin meandering reach is in inverse proportion with the maximum peak discharge of Huayuankou Station.

关 键 词：水沙特征 冲淤规律 大洪水 黄河下游 

分 类 号：TV85[水利工程—水利水电工程] TV882.1