三峡水库常年回水区和尚滩汛期航道条件变化分析.pdf

20 13 年 6 月 水运工程 Jun. 20 13 第 6 期 总第 480 期 Port Waterway Engineering No. 6 Serial No. 480 三峡水库常年回水区和尚滩 汛期航道条件变化分析* 刘 勇，王 涛, 解中柱 （长江重庆航运工程勘察设计院，重庆 40 1147 ） 摘要：收集三峡水库常年回水区洪水急流滩——和尚滩大量的实测地形、水文及过往船舶航行资料，建立了数学模 型，分析汛期的航道条件变化，并得到和尚滩的船舶自航上滩临界流量条件。结果表明：175 m试验性蓄水后，和尚滩航道 条件有所改善，流速、比降减缓，水深、航宽增加，万吨级船队及3 000吨船舶自航上滩临界流量有所提升，航运效益明显 提高。 关键词：三峡水库；洪水急流滩；航道条件；上滩流量 ( ) 中图分类号：U 617 文献标志码：A 文章编号：1002-4972 20 13 06-0081-004 Channel condition variation in flood season of Heshang rapids in perennial backwater area of the Three Gorges reservoir LIU Yong, WANG Tao, XIE Zhong-zhu (Changjiang Chongqing Harbour and Waterway Engineering Investigation and Design Institute, Chongqing 401147, China) Abstract: This paper collects the data about measured terrain, hydrology and track line of ships of Heshang rapids in perennial backwater area of the Three Gorges reservoir, establishes the mathematical model, analyzes the channel condition variation in the flood season, and gains the critical discharge for ships ascending Heshang rapids. The results show that the channel condition of Heshang rapids in the flood season is improved, vertically- averaged flow and slop decreases, and water depth and width of navigation increases. The critical discharge for the 10 000DTW fleet and 3 000DTW ship increases, and the shipping efficiency in Three Gorges reservoir area is improved. Key words: the Three Gorges reservoir; flood rapids; channel condition; critical discharge