双龙河挡潮闸调度方案与闸下河道冲刷效果  

Gate Operation Schemes and Channel Erosion Below the Tidal Barrier in Shuanglong River

作　　者：梁慧迪[1] 匡翠萍[1] 顾杰[2] 赵旭特 Liang Huidi;Kuang Cuiping;Gu Jie;Zhao Xute(School of Civil Engineering,Tongji University,Shanghai 200092,China;School of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;Shanghai Harbor Quality Control and Testing Limited Company,Shanghai 201315,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]上海海洋大学海洋科学学院,上海201306 [3]上海港湾工程质量检测有限公司,上海201315

出　　处：《天津大学学报（自然科学与工程技术版）》2016年第12期1282-1289,共8页Journal of Tianjin University：Science and Technology

基　　金：中央分成海域使用金支出项目

摘　　要：基于MIKE21 Flow Model建立双龙河口潮流、泥沙输运及河床演变数学模型,采用实测资料对数学模型进行了验证.通过对不同冲刷方式、开闸流量以及闸门调控过程的调度方案的模拟计算,研究闸门调度方案对闸下河道冲刷效果的影响,分析河道冲淤分布、河道冲刷总量和冲刷效率变化规律.研究结果表明:河道的冲刷总量与开闸流量成正相关,但受河道地形的控导作用,河道各段冲淤分布不均.采用大流量径流冲淤时,连续开闸方式可使河道冲刷效率更高;但采用小流量径流冲淤或纳潮冲淤时,非连续开闸方式可显著提高河道冲刷效率.A set of tidal current model,sediment transport model and morphological model is set up based on MIKE-21 Flow Model,which has been well verified by field measured data.The effects of gate operation schemes,as wellas different flushing types,discharges and the gate operations,are studied through numerical simulation of bed erosionand sediment deposition in the river channel.The channel deformation,magnitude of bed erosion and flushingefficiency are analyzed based on the simulated results.The results indicate that the magnitude of bed erosion has apositive relation to the flow discharges.However,the magnitude of channel deformation is uneven in the wholechannel due to the influence of topography.When adopting scouring siltation by large flow discharges,it is moreeffective to take the measure of continuous sluicing than non-continuous sluicing.But when adopting scouring siltationby small flow discharges or tides,the flushing efficiency can be obviously improved by the measure of noncontinuoussluicing.

关 键 词：河道冲刷 闸门调控 挡潮闸 双龙河 

分 类 号：TV148[水利工程—水力学及河流动力学]