水利学报2025，Vol.56Issue(12)：1608-1619,12.DOI:10.13243/j.cnki.slxb.20250482
南水北调中线工程冬季水量-水温-水力协同调度研究
Coordinated regulation of wintertime water volume,temperature,and hydraulics in Central Route of South-to-North Water Diversion Project in China
摘要
Abstract
The winter water transfer along the Central Route of the South-to-North Water Diversion Project(CRSNWD)needs to reduce flow to ensure the safety of the project.However,under the current context of capacity enhancement to increase winter water conveyance,it is necessary to appropriately increase the flow rate.How to resolve this conflict has become a key issue that must be addressed urgently in similar northern water network projects during winter operation.Traditionally,low flow operation with low Froude numbers at critical sections has been adopted during winter water conveyance to passively respond to sudden drops in water temperature and river ice pro-cesses caused by cold waves.To overcome these difficulties,this study proposes a new mode of winter water volume-water temperature-hydraulic coordination scheduling for the main channels of the CRSNWD,focusing on shortening the ice period duration and reducing the impact range of the ice.This mode coordinates dynamically three aspects:meeting water demand from the perspective of quantity,delaying ice cover formation from the perspective of water temperature,and controlling ice development from the perspective of hydraulics.Based on this concept,the study investigates a winter large-flow,ice-free conveyance technology,which reduces the exposure time of the open chan-nel water body to low temperatures by increasing flow rate(thus increasing flow velocity),enhancing water's thermal capacity while delaying or controlling ice cover formation.This is combined with raising the critical Froude number threshold at key sluice stations to enhance winter water conveyance capacity.To validate the mode's effectiveness and the coordination between water volume,temperature,and hydraulics,a detailed simulation model of water tem-perature and river ice processes for the CRSNWD was developed and verified with field observations.Multiple sce-nario simulations were conducted under varying water conveyance flows,air temperature fluctuations,and upstream incoming water temperatures.Results indicate that large winter flows in the CRSNWD and increased upstream water temperatures directly enhance the thermal capacity and water temperature along the channel.The increases in flow and water temperature delay ice development,and raising the critical Froude number threshold at key sluice stations helps improve the project's winter conveyance capacity.The proposed winter water volume-water temperature-hydraulic coordination scheduling for the CRSNWD can serve as operational references.关键词
水量-水温-水力/冰期调度/南水北调中线/冬季输水/河冰模型Key words
water volume-water temperature-hydraulic/regulation in ice period/Central Route of South-to-North Water Diversion/wintertime water transfer/river ice model分类
建筑与水利引用本文复制引用
潘佳佳,郭新蕾,陈晓楠,侯召成,付辉,王涛..南水北调中线工程冬季水量-水温-水力协同调度研究[J].水利学报,2025,56(12):1608-1619,12.基金项目
国家重点研发计划项目(2022YFC3202500) （2022YFC3202500）
国家自然科学基金项目(U2243221,U2243239,U2443221,52479080) （U2243221,U2243239,U2443221,52479080）
流域水循环与水安全全国重点实验室项目(SKL2025RCPY04) （SKL2025RCPY04）
中国水科院科研专项(HY0145B032021) （HY0145B032021）
