摘要
基于1990―2016年黄河口尾闾段实测水沙资料,通过分析进入尾闾段来沙组成情况,分别探讨了尾闾段河床冲淤及平滩河槽形态与来沙组成之间的关系。研究表明:进入尾闾段的来沙中细沙占比最大,对水流冲刷最不敏感;粗沙占比最低,对水流冲刷却最为敏感。尾闾段河床冲淤及平滩河槽形态与来沙组成之间的关系显示:河床淤积量随来沙系数增大而增大,而平滩面积随来沙系数增大而减小;河床冲淤量及平滩面积与分组来沙系数关系的相关性均表现出这两个参数随来沙颗粒粒径的增加而减小的趋势。
Based on the measured water and sediment data at the tail reach of the Yellow River Estuary from1990 to 2016, the sediment composition in the tail reach is analyzed, and relationships between the sediment composition, the scouring and silting of the riverbed, and the bank-full channel area of the tail reach are discussed respectively. The results show that the proportion of fine sand is the largest, and it is the least sensitive to scouring process in the tail reach. The proportion of coarse sand is the lowest, but it is the most sensitive to current scouring process. The relationship between channel erosion and inflow sediment, and the bank-full channel area in the tail reach shows that the amount of riverbed deposition and inflow sediment increases with the increase of inflow sediment coefficient, while the bank-full area decreases with the increase of inflow sediment coefficient. The correlations between the amount of riverbed scouring and silting, the bank-full area, and the coefficient of sediment inflow show a decreasing trend with the increase of inflow sediment particle size.
作者
杨卓媛
夏军强
周美蓉
邓珊珊
YANG Zhuoyuan;XIA Junqiang;ZHOU Meirong;DENG Shanshan(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2022年第10期985-992,共8页
Engineering Journal of Wuhan University
基金
国家自然科学基金项目(编号:51725902)
国家重点研发计划项目(编号:2017YFC0405501)。
关键词
来沙组成
河床冲淤
平滩河槽形态参数
黄河口
尾闾段
inflow sediment composition
riverbed scouring and silting
bank-full channel geometry parameter
Yellow River Estuary
the tail reach
