摘要
针对涡阳船闸南岸建设方案建立二维水流数学模型和物理模型,分析验证下引航道通航水流条件。结果表明:①原枢纽布置方案下游存在急弯河段,水流偏转急,口门区存在斜流,水流横向流速较大,不利于通航;②采用调整航线、切滩以及河道疏浚的优化工程措施,可有效改善下引航道的通航条件。推荐方案各工况的横向流速、纵向流速和回流流速均满足规范要求,有效改善了回流与横流现象,可为后期船闸方案设计提供参考和依据,也可为其他类似船闸改善通航水流条件提供参考借鉴。
Based on the construction scheme of the south bank of Guoyang County shiplock,a two-dimensional flow mathematical model and a physical model are established to analyze and validate the navigable flow conditions in the lower approach channel.The results show that:①there are sharp bends in the lower reaches of the project,the flow deflects sharply,there is oblique flow in the entrance area,and the lateral velocity of the flow is large,which is not conducive to navigation;②the navigation conditions of the lower approach channel can be effectively improved by adopting the optimal engineering measures of adjusting the route,cutting the shoal and dredging the channel.The transverse velocity,longitudinal velocity and backflow velocity of the recommended scheme meet the requirements of the code,and effectively improve the backflow and crossflow phenomena.It can provide reference and basis for the design of later shiplock scheme,and provide reference for other similar shiplock to improve navigation flow condition.
作者
刘志庆
LIU Zhiqing(Anhui Modern Transportation Design and Research Institute Co.,Ltd.,Hefei 230601,China)
出处
《广东水利水电》
2024年第7期18-23,共6页
Guangdong Water Resources and Hydropower
关键词
下引航道
口门区
数学模型
通航水流条件
切滩
疏浚
downward approach channel
Koumen district
mathematical model
navigable current conditions
cut the beach
dredging
