长江科学院院报2024，Vol.41Issue(7)：1-7,7.DOI:10.11988/ckyyb.20240151
三峡水库汛期沙峰预报技术及排沙调度实践
Technology of Forecasting Sediment Peak and Practice of Sediment Reduction Dispatch in Three Gorges Reservoir During Flood Season
摘要
Abstract
The scheduling for sediment discharge from the Three Gorges Reservoir(TGR)is a crucial technical is-sue influencing its safe operation and overall benefits.Based on long time series measured water and sediment data and reservoir operations,we expound the water and sediment characteristics in TGR during flood season,the sedi-ment peak forecasting techniques and sediment reduction scheduling strategies in practice.Results indicate that after 2012,the flood season runoff in TGR constituted 45％of the annual total runoff,while sediment transport during this period reaching 84％.The proportion of sediment transport during each flood event notably increased,highlight-ing an asynchronous pattern between water and sediment transport.Leveraging real-time monitoring data,we built a sediment forecasting system integrating multi-form boundary prediction model and reservoir water-sediment transport model.This system forecasts the time of sediment peak arriving dam and the corresponding sediment load,offering technical support for sediment reduction dispatch during flood season.Successful operational tests of sediment peak discharge in TGR have yielded expected outcomes,significantly increasing sediment discharge ratios within the res-ervoir.During each flood event,sediment discharge ratios ranged from approximately 27％to 39％.关键词
三峡水库/泥沙淤积/水沙特性/泥沙预报/排沙调度Key words
Three Gorges Reservoir/sediment deposition/water and sediment characteristics/sediment forecast/sediment reduction dispatch分类
建筑与水利引用本文复制引用
袁晶,杨成刚..三峡水库汛期沙峰预报技术及排沙调度实践[J].长江科学院院报,2024,41(7):1-7,7.基金项目
国家自然科学基金项目(U2040218) （U2040218）
中国长江三峡集团有限公司科研项目(0704220) （0704220）
