摘要
引航道与泄洪河道交汇区由于水流流向与航行进出闸方向角度较大,常产生较大横向流速,影响船舶安全进出闸。文章建立成子河船闸引航道与泄洪河道交汇区平面二维数学模型,模拟研究该区域通航水流条件及其改善措施。研究结果表明:无工程措施条件下,废黄河下泄流量为10 a一遇洪水时,成子河引航道与泄洪河道交汇区表面最大横向流速大于0.3 m/s,不能满足通航要求。当废黄河与引航道交汇区的上游设置导流墙时,导流墙将来流分为左右两股水流,向下游的主流流向逐渐与下游引航道平行,交汇区的水流受导流墙阻挡流速减小迅速,能满足通航要求。
The transverse velocity in the intersection area of approach channel and flood discharge channel isusually quite large, which will affect the safety of the ship out of the gate. Taking the Chengzi river ship lock as thestudy object, 2D-mathematical model of Chengzi river was built in this paper. Based on the model, the flow patternin the intersection area of approach channel and flood discharge channel and its improvement measures were simu-lated. The result indicates that the transverse velocity in the intersection area is larger than 0.3 m/s without any engi-neering measures. The flow condition can not meet the requirements of navigation. In order to decrease the trans-verse velocity, a guide wall was set in the upstream intersection area in this paper. By the engineering measure, thetransverse velocity is reduced to lower than 0.3 m/s, which meets the requirements of navigation.
出处
《水道港口》
2016年第2期166-169,共4页
Journal of Waterway and Harbor
关键词
船闸
引航道
数学模型
导流墙
泄洪道
交汇区
lock
approach channel
mathematical model
diversion wall
flood discharge channel
intersection area
