长江中游瓦口子水道河床演变分析  

Study on fluvial process of Wakouzi reach in the middle Yangtze River

作　　者：黄颖 黄成涛 郑力 裴金林 

机构地区：[1]长江航道局,湖北武汉430010 [2]长江航道规划设计研究院,湖北武汉430011

出　　处：《泥沙研究》2009年第5期41-46,共6页Journal of Sediment Research

基　　金：国家自然科学基金项目(50609018)

摘　　要：通过实测资料,系统分析了长江中游瓦口子水道演变特点,并对三峡蓄水后的演变趋势进行了预估。结果显示,该河段的枯期滩槽格局是弯曲放宽型河道形态与来水来沙综合作用的结果:汛期来沙量大有利于完整边滩的维持,而中、小水年以及汛后退水持续时间长的年份则易造成南侧冲刷,使金城洲两侧形成分汊格局。三峡蓄水后来沙量减少不利于该河段的航道稳定。Based on measured data, the fluvial process of Wakouzi reach in the middle Yangtze River is systematically analyzed, and the probable changes aroused by the Three Gorges Reservoir is roughly predicted. The results show that high sediment load in flood period can induce a large point bar and single stream channel pattern, while prolonged recession period is easy to scour the point bar and cause a branched channel pattern in dry season. The sediment deficit after the Three Gorges Project construction is adverse for maintaining the navigation channel in this reach.

关 键 词：瓦口子水道 长江中游 洲滩演变 水沙条件 

分 类 号：TV147[水利工程—水力学及河流动力学]