长江中游戴家洲河段天然水流特性试验研究  

Study on flow characteristics of braided reach of Daijiazhou reach in Middle Yangtze River

作　　者：刘万利[1,2] 李旺生[1] 朱玉德[1] 崔喜凤[1] 邢顺敬[1] 

机构地区：[1]交通部天津水运工程科学研究所工程泥沙交通行业重点实验室,天津300456 [2]武汉大学水资源与水电工程国家重点实验室,武汉430072

出　　处：《水道港口》2009年第2期113-118,共6页Journal of Waterway and Harbor

摘　　要：文章对长江中游戴家洲河段的来水来沙特点进行了分析。通过实体模型试验,对该河段水流动力轴线的位置、戴家洲洲头局部流态、分汇流点的位置以及各级流量下断面平均水深、断面平均流速进行了深入分析,对各级流量下的比降、分流比进行了研究,并对两汊平均流速、平均水深,涨、落水期的水深、流速、比降等进行了比较,以加深对河段水流运动规律的认识,同时为工程方案整治效果的分析比较打下基础。The characters of incoming water and sediment of Daijiazhou reach in Middle Yangtze River were analyzed. According to the experimental data of physical model, the position of flow hydrodynamic axis, the local flow condition of Daijiazhou sandbar, the position of bifurcation and confluence, the mean water depth in section, and the mean ve- locity in section under various discharges were investigated. The surface slope and discharge ratio under various discharges were analyzed. The mean velocity, mean depth and mean surface slope during the water-rising stage were compared with those during falling flood stage as well. It lays a good foundation for the analysis of the regulation effect.

关 键 词：分汊 水深 流速 比降 分流比 水流特性 

分 类 号：TV12[水利工程—水文学及水资源]