湖泊科学2024，Vol.36Issue(5)：1562-1571,10.DOI:10.18307/2024.0545
三峡水库汛期排沙规律研究
Sediment discharge characteristics of the Three Gorges Reservoir during flood seasons
摘要
Abstract
The sediment discharge during flood seasons is important to reservoir sedimentation management.By generalization theory deduction,this article analyzed the main factors affecting sediment discharge during flood seasons of the Three Gorges Reser-voir.Based on measured water and sediment data,an empirical formula for the sediment discharge ratio during flood seasons of the Three Gorges Reservoir was established,and the risk of sediment accumulation under optimized flood seasons scheduling was dis-cussed.Results showed that the incoming sediment of the Three Gorges Reservoir in flood seasons accounted for more than 90.5％of the annual incoming sediment,which was mainly concentrated during flood.The empirical formula for sediment discharge ratio dur-ing flood seasons was established.The sediment discharge ratio was influenced by both flow rate and water level,and had a good in-verse relationship with the comprehensive influencing factors represented by the inflow and outflow of the reservoir and the water level in front of the dam.During flood seasons,the operation mode of"high inflow with low water level,low inflow with high water level"could be adopted to improve comprehensive benefits.This research could provide reference for sedimentation management and optimal operation of the Three Gorges Reservoir.关键词
三峡水库/汛期/排沙比/优化调度/泥沙淤积风险Key words
Three Gorges Reservoir/flood season/sediment discharge ratio/optimal operation/sedimentation risk引用本文复制引用
任实,高宇,吕超楠,赵汗青,张成潇..三峡水库汛期排沙规律研究[J].湖泊科学,2024,36(5):1562-1571,10.基金项目
长江水科学研究联合基金项目(U2040218)和中国长江三峡集团员工科研项目(NBYG20220167,WWKY-2021-0033)联合资助. （U2040218）
