省水船闸闸底水平分流式连通廊道布置形式优化
Optimization of layout form of horizontal diversion connecting culvert at bottom of water-saving ship lock
陈明 1张萌 1杨岚彬 1黄海津 1张忠原 1ASIF Muhammad1
作者信息
- 1. 重庆交通大学,水利水运工程教育部重点实验室,重庆 400074
- 折叠
摘要
省水船闸闸墙长廊道侧支孔输水系统通常采用闸底水平分流式连通廊道布置形式,以减少工程开挖量,分流均匀性是此类船闸输水过程的核心难题.针对该问题,依托我国某省水船闸工程,采用三维水流数值模拟方法对其连通廊道布置形式进行优化研究.结果表明:增大连通廊道与闸墙长廊道的接口面积,可有效改善两侧支廊道流量震荡问题.连通廊道水平分流口两侧宽度与分流墩两侧半径间的比值K表征分流口两侧分流的均匀性,当K=1.064 时,两侧支廊道分流均匀性、闸室支孔出流均匀性及水流条件较佳.研究成果可为类似省水船闸连通廊道布置提供技术参考.
Abstract
To reduce excavation volume,a horizontal diversion connecting at the bottom of the ship lock is typically adopted for the side support hole water delivery system with sidewall ports of the water-saving ship lock.The diversion uniformity of the connecting culvert is the core challenge in the water delivery process of such ship locks.Addressing this issue,based on a water-saving ship lock project in China,a three-dimensional hydraulic numerical simulation method is used to optimize the layout of the connecting culvert.The results show that increasing the interface area between the connecting culvert and the long culvert of lock wall can effectively mitigate the flow oscillations in the lateral culverts.The diversion uniformity of connecting culvert is characterized by K,defined as the ratio of the width on both sides of the horizontal diversion opening to the radius on both sides of the flow splitter.When K=1.064,the flow distribution uniformity in the lateral culverts,the outflow uniformity from the sidewall port,and the hydraulic conditions in chamber are better.The research results can provide technical references for the layout of connecting culverts in similar water-saving ship locks.
关键词
船闸/水平分流/连通廊道/流量分配/数值模拟Key words
ship lock/horizontal diversion/connecting culvert/flow distribution/numerical simulation引用本文复制引用
基金项目
国家重点研发计划项目(2023YFC3206104)
出版年
2024
NETL
NSTL
万方数据