水科学进展2016，Vol.27Issue(2)：186-195,10.DOI:10.14042/j.cnki.32.1309.2016.02.003
船闸泄水作用下引航道中动水冲沙规律
Study on the sediment scouring rules by dynamic water effect in approach channel under the action of ship lock sluicing
摘要
Abstract
In order to reduce the cost of desilting, and improve the efficiency of navigation, the desilting in the down-stream approach channel by ship lock sluicing is studied with engineering practice. A two-dimensional numerical water-sediment model has been established for simulated analysis, and the hydraulic test of flow field and sediment field has been employed for verification. It explores the rules of sediment deposition in the entrance of approaching channel, analyzes the hydraulic characteristics of water conveyance system in ship lock, studies the scouring effect in the different scouring discharge, scouring time and initial siltation thickness, and obtains the relationship between wa-ter discharge of ship lock and the maximum siltation thickness. The results show that the maximum siltation thickness is decreasing with the increasing scouring time linearly under the same initial terrain and discharge, and the slop of sediment thickness is increasing with the scouring discharge. When the thickness decreases to a critical value, the scouring effect becomes weakened with the increasing scouring speed. Research results may provide theoretical refer-ence for the desalting technology of the channel by the use of lock emptying.关键词
引航道/淤积/冲刷/水沙模型Key words
approach channel/sedimentation/scouring/water-sediment model分类
建筑与水利引用本文复制引用
徐进超,李云,宣国祥,刘本芹,金英..船闸泄水作用下引航道中动水冲沙规律[J].水科学进展,2016,27(2):186-195,10.基金项目
三峡后续工作航运项目（0001232013CF2000001）；国家自然科学基金资助项目（51409141） The study is financially supported by the National Natural Science Foundation of China （ No．51409141）． （）
