泥沙研究2025，Vol.50Issue(5)：9-16,8.DOI:10.16239/j.cnki.0468-155x.2025.05.002
三峡水库区间入库泥沙量估算
Estimation of sediment yield in Three Gorges Reservoir area
摘要
Abstract
Accurately estimating the amount and source of sediment in the Three Gorges Reservoir is of great significance to effectively study the problem of sediment deposition in the reservoir.In the past,the amount of sediment transporting from the upstream was taken as incoming sediment without considering the sediment yield of reservoir itself,which underestimating the actual sediment transported into the reservoir.In this paper,the soil erosion and sediment transported from the reservoir area in the Three Gorges Reservoir has been estimated based on the data analysis and revised universal soil loss equations.The results show that the annual soil ero-sion modulus in the Three Gorges Reservoir area from 2001 to 2012 are 1 844.24 to 2 474.26 tons per square kilometer.The total annual sediment amount transported into the reservoir ranges from 10.70 million tons to 24.54 million tons,which the largest amounts in Daxing River and Dongli River areas,and the smaller a-mounts in Xiangxi River and the Longhe River areas.Compared with the sediment discharges from 1963 to 1990,the main tributaries named Longhe River,Xiangxi River and Modao River,have decreased by 77％,79％and 88％respectively from 2001 to 2012.The sediment delivery ratios in different watersheds of the res-ervoir are between 0.07～0.27,and showed a fluctuating downward trend.Although the area of the Three Gorges Reservoir only account for 5.8％of the upper reaches of the Yangtze River,the amount of sediment transport from reservoir area accounts for more than 15％of the total amount of sediment transport upstream.With the continuous reduction of sediment upstream,the sediment discharge from the Three Gorges Reservoir area cannot be ignored.The research results can provide scientific basis for future research on sediment prob-lems in the Three Gorges Reservoir.关键词
输沙量/土壤侵蚀/泥沙输移比/三峡水库区间Key words
sediment load/soil erosion/sediment delivery ratio/Three Gorges Reservoir area分类
建筑与水利引用本文复制引用
丁文峰,李建明,童晓霞,郑宇,任斐鹏..三峡水库区间入库泥沙量估算[J].泥沙研究,2025,50(5):9-16,8.基金项目
国家自然科学基金长江水科学联合基金项目(U2340215) （U2340215）
