摘要
通过分析黄河下游 1 986年以来实测资料 ,探讨了黄河下游 1 986~ 1 999年水文系列的特点和河道萎缩的特点 ,指出了上世纪 80年代后期以来河道萎缩使河道泄流排沙能力降低 ,洪水位抬高 ,威胁堤防安全 ,河道萎缩还关系到流域的开发和水资源的利用。本文还分析了河道萎缩与水沙特征的关系及河道萎缩的形成条件 。
Through analyzing the observed data from 1986 to 1999, the characteristics of flow and sediment transport and the channel shrinkage in the Lower Yellow River shaped from 1980s to 1990s were discussed in this paper. It was found that channel shrinkage in the lower Yellow River depressed the capacity of drainage and sediment transport, raised the flood level, threatened the embankment safety, and affected the exploiture of drainage area and the use of water resources. Furthermore, the relationship between channel shrinkage and the characteristics of flow and sediment transport, and conditions resulting in the channel shrinkage were analyzed. Consequently, the characteristic relationship of flow and sediment transport, which induced the channel shrinkage, was proposed.
出处
《泥沙研究》
CSCD
北大核心
2003年第4期1-7,共7页
Journal of Sediment Research
基金
国家重点基础研究发展规划项目 (G19990 43 60 4)
关键词
黄河下游
河道萎缩
水文学
淤积
趋势性
the Lower Yellow River
channel shrinkage
Hydrology
background