摘要
船闸布置在江心洲上后,由于相邻建筑物的动水作用及两汊水流在洲尾的交汇,将会影响船闸的通航安全。为研究江心洲型船闸下游的船舶航行问题,探讨有效的改善措施,结合澧水艳洲枢纽、沅水桃源枢纽布置的共同特点,在物理模型基础上利用船舶模型试验分析船闸下游影响航行安全的因素,研究采取针对性措施后航行条件的改善效果。结果表明:布置隔流堤、导流墩等辅助建筑物只能解决下游靠近引航道出口部分航段的通航问题;综合采用拓宽航槽、优化航线、合理调度、优化船闸布置等措施,可有效减小船体漂移,优化航行环境,保障船舶通航安全。
This article intends to introduce more effective measures to solve the river navigation safety problems of the outlet section downstream when the isolated shiplock is located in the central bar instead of on the river bank restrained by some limited conditions. To analyze the influential factors on the navigation safety,we have analyzed the surface flow field under different conditions by using the real-time flow field measuring system and ship model with the scale of 1： 100 to get the real-time drift angle and rudder angle. And,then,we have conducted the tests with the physical models of Yanzhou and Taoyuan hydro-junctions. The analysis results of the testing and experimental data show that the main causes leading to the navigation risks and hazards are the dynamic flow from the adjacent buildings and the confluence from the two outlets. In answering to the above said inefficiency of the existing disadvantages,we have taken the following improvement and compensation measures through a series of detailed analyses of the above said investigated navigation data and problems, which mainly include the following items：（1） Adding necessary auxiliary structures,such as separation levee and current blocking pier can partly improve the navigation conditions of section that is close to the approach channel outlet,though the downstream juncture problems remains open to the passengers;（2） By synthetically adopting measures of widen dredged channel and optimized route,lowered velocity,improved flow pattern and navigation safety could be effectively achieved;（3） Different routes are chosen according to different working conditions,and the effective method is to keep the routes away from the adverse flow;（4） It is effective for the navigation improvement of this type of shiplock by the reasonable junction scheduling and the shiplock layout optimization.
出处
《安全与环境学报》
CAS
CSCD
北大核心
2015年第1期94-97,共4页
Journal of Safety and Environment
基金
国家自然科学基金项目(51079009)
西部交通科技项目(20113280001570)
关键词
安全工程
水路运输
船闸布置
江心洲
通航安全
船舶模型试验
safety engineering
water transportation
shiplock layout
central bar
navigation safety
ship model experiment
