三峡水库排沙比与水沙因子响应关系  

Response Relationship Between Sediment Discharge Ratio with Water Flow and Sediment Factors in Three Gorges Reservoir

作　　者：张倩倩 童思陈[1,2] 龙孝平 蒋聘凤 ZHANG Qian-qian;TONG Si-chen;LONG Xiao-ping;JIANG Pin-feng(School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China;National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University,Chongqing 400074,China;Yangtze Ecology and Environment Co.,Ltd.,Wuhan 430062,China)

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [3]长江生态环保集团有限公司,湖北武汉430062

出　　处：《水电能源科学》2023年第8期101-104,112,共5页Water Resources and Power

基　　金：国家重点研发计划(2018YFB1600400);重庆市基础研究与前沿探索项目(cstc2018jcyjAX0534)。

摘　　要：为研究实际水沙条件下排沙比与影响因素间的响应关系,基于三峡水库2003~2018年实测水沙资料,在分析水库来水来沙特性的基础上探讨了排沙比与各影响因子的响应关系,并建立了主汛期排沙比关系式。结果表明,排沙比与单因子影响因素的相关性不高,说明排沙比受多因子综合影响。从水库的运行调度角度出发,排沙比与滞洪时间呈负相关,应通过缩短滞洪时间来提高排沙效率;从来水来沙角度分析,入库沙量越大,细颗粒泥沙的排沙比越大,粗颗粒泥沙则呈多来少排的特点。在主汛期,排沙比与提出的表达式关系较好,可为三峡水库调度提供参考。In order to study the response relationship between sediment discharge ratio(SDR)and influencing factors under actual water and sediment conditions,based on the measured water and sediment data of the Three Gorges Reservoir(TGR)from 2003 to 2018,this paper discussed the response relationship between SDR and various influencing factors on the basis of analyzing the characteristics of water and sediment from the reservoir,and established the formula of SDR in the main flood season.The results show that the correlation between SDR and single factor is not obvious,indicating that the SDR is affected by multiple factors.From the perspective of reservoir operation and regulation,the SDR is negatively related to the flood detention time,and the sediment discharge efficiency should be improved by shortening the flood detention time;From the perspective of incoming water and sediment,the greater the amount of sediment entering the reservoir,the greater the sediment discharge ratio of fine sediment is;Coarse sediment,on the contrary,is characterized by more coming and less discharging.In the main flood season,the relationship between the SDR and the proposed expression is good.This study can provide reference for the operation of TGR.

关 键 词：三峡水库 泥沙淤积 排沙比 影响因子 

分 类 号：TV145[水利工程—水力学及河流动力学]