摘要
船闸口门区通航水流条件的好坏直接影响航运的安全。针对沥口枢纽上游口门区及连接段通航水流条件差、横向流速大等问题,通过建立沥口枢纽河段水工整体物理模型试验,提出在坝轴线上游设置浅坝,调整河道河势及导流墩分流等优化措施。试验结果表明:优化方案下口门区及连接段内水流流态得到明显的改善,通航条件满足规范要求。船模航行试验表明最大通航流量Q_(20%)=4 661 m^3/s,并论证在此方案下通航的安全性与工程可行性。
The condition of the flow at the lock entrance area affects directly the safety of the ship in navigation.To counter the problems such as the poor flow condition and the big transverse velocity at the entrance area and connection segment in Likou hydro-junction,we put forward optimization measures including setting shallow dam on the upstream of the dam axis,adjusting the river regime and building guiding dikes for flow diversion based on the establishment of the integral hydraulic model test.The result shows that the flow regimes of the entrance area and connection segment are obviously improved by optimization measures,and the navigation flow condition meets the requirement of the specification.The ship model navigation experiment shows that the maximum navigable flow Q 20%=4 661 m^3 s.The feasibility of engineering and safety of navigation under this plan is also demonstrated.
作者
刘超
张世宝
张金明
谭智天
LIU Chao;ZHANG Shi-bao;ZHANG Jin-ming;TAN Zhi-tian(North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Pearl River Hydraulic Research Institute of Pearl River Water Resources Commission,Guangzhou 510611,China)
出处
《水运工程》
北大核心
2019年第4期141-146,共6页
Port & Waterway Engineering
关键词
上口门区
通航水流条件
上引航道
船模试验
沥口枢纽
upstream entrance area
navigable flow condition
upstream approach channel
ship model test
Likou hydro-junction
