泥沙研究2023，Vol.48Issue(6)：38-43,6.DOI:10.16239/j.cnki.0468-155x.2023.06.006
三峡水库典型暴雨过程径流泥沙来源组成变化分析
Study on the flow and sediment sources to the Three Gorges Reservoir during the typical torrential rains
摘要
Abstract
In recent years,affected by multiple factors such as the operation of water conservancy projects,climate change and soil conservation,phenomena such as the sharp decrease in sediment transport into the Three Gorges Reservoir,the increase in the proportion of sediment from tributaries,and the concentrated sediment transport by local heavy rainfalls have gradually emerged.Based on recent 40 years observation data,the sources of runoff and sediment during ten torrential rains are analyzed.The results show that the main rainfall zones in the upper Yangtze River are often located in the Jialing River,Min River and Tuo River basins,and the runoff and sediment producing areas during the torrential rains are basically consistent with the main rainfall areas.During the typical torrential rains,the runoff sources in to the Three Gorges Reservoir has little changed,mainly from Jinsha River,Min River and Jialing River.After the impoundment of Xiluodu and Xiangjiaba reservoirs,the inflow sediment from Jinsha River basin sharply decreases from the largest proportion to less than 1％,while the proportion of Min River,Tuo River and Jialing River,has increased significantly.关键词
三峡水库/水沙来源/典型暴雨/组成变化Key words
Three Gorges Reservoir/source of flow and sediment/typical torrential rain/composition change分类
建筑与水利引用本文复制引用
李思璇,袁晶,朱玲玲,吕超楠..三峡水库典型暴雨过程径流泥沙来源组成变化分析[J].泥沙研究,2023,48(6):38-43,6.基金项目
国家自然科学基金长江水科学联合基金项目(U2040218) （U2040218）
三峡后续工作项目"三峡水库区间支流水沙变化"(21303) （21303）
中国长江三峡集团有限公司科研项目(0704220) （0704220）
