人民长江2026，Vol.57Issue(2)：7-14,23,9.DOI:10.16232/j.cnki.1001-4179.2026.02.002
东荆河下游河道整治效果评估与可持续性研究
Evaluation of river regulation effect and sustainability research in lower reaches of Dongjing River
摘要
Abstract
To restore the discharge capacity of the lower Dongjing River,relevant authorities organized and implemented the first phase of the river regulation project.Based on measured hydrological data from flood seasons before and after project implementa-tion,the water level drop under the same flow rate was analyzed,a two-dimensional hydrodynamic model was recalibrated,and design conditions were re-evaluated.By comparing changes in erosion and deposition in the river section,the regulation effective-ness and its sustainability were systematically assessed using a two-factor sustainability evaluation framework of"water-sedi-ment variation-sediment transport capacity response".Results show that after project implementation,the water level at Yanglin-wei Station under the regulation flow(3 000 m3/s)was 0.06 m lower than the designed value,achieving the intended objective.Under the condition that the 2023 flood peak discharge increased by 16%compared with 2021,the water level at Yanglinwei Sta-tion dropped by 0.18 m.With water levels along the river significantly reduced under equivalent discharge,the channel flood con-veyance capacity was notably improved.Actual siltation in the dredged area was limited,demonstrating the sound sustainability of the regulation project.The dredging floodplain scheme showed clear advantages in cultivated land protection and investment effi-ciency.The findings can provide a technical reference for the subsequent harnessing projects of the lower Dongjing River and for regulation projects in other tributaries of the Yangtze River Basin.关键词
河道整治/效果评估/含沙量/泥沙回淤/东荆河下游Key words
river channel regulation project/effect evaluation/sediment concentration/sediment siltation/lower reaches of Dongjing River分类
建筑与水利引用本文复制引用
张晚祺,杨何畏,翁朝晖,唐金武,聂志刚,孙元元..东荆河下游河道整治效果评估与可持续性研究[J].人民长江,2026,57(2):7-14,23,9.基金项目
国家重点研发计划项目(2023YFC3209503) （2023YFC3209503）
