中国水利水电科学研究院学报（中英文）2026，Vol.24Issue(5)：670-680,11.DOI:10.13244/j.cnki.jiwhr.20250153
南水北调中线干渠藻-泥淤积问题及应对策略研究
Study on algae-mud siltation and its countermeasures in the main canal of the middle route of the South-to-North Water Diversion Project
摘要
Abstract
Algal-Mud Particulate Suspended Matter and Its Transport and Sedimentation Processes:Implications for Water Quality Safety in the Middle Route of the South-to-North Water Diversion Project Algal-mud particulate sus-pended matter and its transport and sedimentation processes are among the key factors affecting the water quality safety of the Middle Route of the South-to-North Water Diversion Project(MR-SNWDP).Based on four comprehen-sive surveys on the sedimentation characteristics of the entire MR-SNWDP main canal conducted from 2021 to 2024 and one characteristic point sampling analysis,this study systematically elaborates on the distribution characteristics of sedimentation in the main canal,the properties of suspended particulates,and the influence of their dynamic changes on the sedimentation process.Additionally,it assesses the potential risks of algal-mud sedimentation to water quality and proposes corresponding prevention and control strategies.The results indicate the following:(1)The sedimentation volume in the main canal shows an increasing trend from south to north.There are 53 locations with perennial sedimentation,among which 7 are high-risk points(with sedimentation volume>200 cubic meters(m³)at each point).The sluice gate areas have the highest sedimentation risk,and the sedimentation volume in front of the Liyang River Sluice Gate reaches a maximum of 3,789.8 m3.(2)There is a significant positive correlation between the sedimentation volume along the main canal and the dynamic changes in suspended particulate concentra-tion,density,and algal density.(3)The sedimentation process induces the release of algal-derived organic matter.Taking the Liyang River sedimentation area as an example,it is estimated that the sedimentation of algal-mud sus-pended matter will increase the dissolved organic matter(DOM)concentration in local water bodies by 0.22-0.54 mg/L.(4)Through the synergistic regulation of ecological water replenishment and hydrodynamics in sluice gate areas,efficient and low-cost sedimentation prevention and control can be achieved,which effectively alleviates the sedimentation risk in the downstream areas of sluices and the terminal section of the canal.The results of this study hold significant importance for ensuring the water quality safety of the MR-SNWDP main canal.关键词
南水北调中线干渠/淤积/退水闸/悬浮颗粒物/藻类Key words
the main canal of the Middle Route of the South-to-North Water Diversion Project/siltation/sluice gate/suspended particulate matter/algae分类
资源环境引用本文复制引用
刘奕,赵伦,刘洋洋,贾兵营,陈立斌,张洪刚..南水北调中线干渠藻-泥淤积问题及应对策略研究[J].中国水利水电科学研究院学报（中英文）,2026,24(5):670-680,11.基金项目
国家重点研发计划项目(2021YFC3200904) （2021YFC3200904）
