摘要
高陂水利枢纽工程坝址河段弯曲、下游河道逐渐缩窄,泄洪流量较大,泄水闸泄洪的下游河床冲刷特性是工程设计和运行关注的重点。在泄水闸下游河床动床模型试验的基础上,对水闸下游缩窄型河道的流态和河床冲刷特性进行研究。研究表明,由于泄水闸下游河道右岸坡往河道收缩,水流产生顶冲和回流,增大了右端闸孔下游消能工的单宽流量、水流波动和下游河床冲刷。模型试验优化了海漫末端防冲槽的布置,可确保工程运行的安全。本文将海漫末端冲深试验成果与水闸设计规范推荐的冲刷公式计算结果进行对比分析,成果可供类似工程设计参考。
Because the dam site river reach of Gaobei water control project is bend,and the downstream river is gradually narrowed,the flood discharge of the sluice is larger,therefore,the downstream riverbed scour of the sluice is the focus of the engineering design and operation.Based on the movable bed model test of the sluice downstream riverbed,the characteristics of flow pattern and riverbed scour of the sluice downstream shrinkage narrow river are studied.The study shows that due to the shrinkage of the right bank slope of the downstream river to the river,the flow produces rushing and circumfluence,and increase the unit-width discharge,the flow fluctuation and the downstream riverbed scour of the right end sluice.The model test optimizes the layout of the anti-scour trench at the apron end,which can ensure the safety of the project.In this paper,the scouring depth of the apron end of test results and the calculation results of the formula recommend the sluice design specification is analyzed,the results can be used as reference for similar engineering design.
作者
黄智敏
付波
陆汉柱
陈卓英
钟勇明
HUANG Zhimin;FU Bo;LU Hanzhu;CHEN Zhuoying;ZHONG Yongming(Guangdong Research Institute of Water Resources and Hydropower,Guangdong Provincial Key Laboratory of Hydrodynamics,Guangzhou 510635,China)
出处
《广东水利水电》
2018年第3期11-14,共4页
Guangdong Water Resources and Hydropower
关键词
泄水闸
弯曲缩窄型河道
泄洪
河床冲刷
模型试验
sluice
bend and narrow river
flood discharge
riverbed erosion
model test
