水力发电学报2012，Vol.31Issue(5)：127-132,6.
三峡蓄水初期坝下沙卵石河段航道条件分析
Analysis of navigation conditions in gravel bed reach at initial impounding stage of Three Gorges reservoir
摘要
Abstract
After impoundment of the Three Gorges reservoir, the incoming water and sediment conditions of its downstream river reach have been changed, and consequently changes have occurred in local flow conditions, erosion and deposition features, and riverbed evolution. All these changes together produce a significant impact on navigation conditions there. Analysis of in-situ measurements show that some navigational problems have emerged. First, in overall the depths of navigable channels have been increased, improving the navigations of the entire reach. Second, the channels in certain local reaches tend to be wider and shallower, causing a decreasing navigation depth. Third, with water level dropping, new gravel shoals of too small depths have emerged, becoming inadequate for navigation. Last, the difficulty of rapid currents and large gradient at the Lujiahe gravel shoal remains as before.关键词
河流动力学/航道/原型观测/沙卵石河段Key words
river dynamics/navigation conditions/prototype observation/gravel bed reach分类
建筑与水利引用本文复制引用
陈飞,付中敏,刘怀汉,刘奇峰..三峡蓄水初期坝下沙卵石河段航道条件分析[J].水力发电学报,2012,31(5):127-132,6.基金项目
西部交通建设科技项目 （）
