人民珠江2025，Vol.46Issue(4)：92-100,9.DOI:10.3969/j.issn.1001-9235.2025.04.011
基于水动力模型的河道清淤方案比选研究
Comparison and Selection of Channel Desilting Schemes Based on Hydrodynamic Models
摘要
Abstract
In order to explore the desilting effects of different channel desilting schemes,a hydrodynamic model accelerated by a graphic process unit(GPU)was used to construct a flood evolution model for the study area and simulate the flood inundation situation of the channels in the study area after implementing four desilting schemes at different return periods.The results show that:① The schemes in terms of flood inundation alleviation and desilting excavation volume in descending order are as follows:full-section scheme,combination scheme,only floodplain scheme,and only thalweg scheme.② The inundated area of each scheme decreases by 4.20%～21.68%,1.57%～13.85%,6.66%～43.6%,and 5.63%～39.7%,respectively.In terms of inundated area reduction rate,the combination scheme has an average reduction of 2.19%compared with the full-section scheme at different return periods,but the excavation volume of the full-section scheme is 21.89%higher than that of the combination scheme.③ The ratio of the inundated area reduction rate to the excavation volume is used to represent the ability to reduce the inundated area per unit excavation volume.The ability of each desilting scheme to reduce inundated area is 7.34%～12.49%,2.75%～7.98%,8.86%～19.08%,and 9.13%～21.18%,respectively.The combination scheme has the strongest ability to reduce the inundated area at different return periods.Therefore,the combination scheme is determined as the comprehensive optimal scheme among the four desilting schemes.This study can provide a reference for channel desilting,flood control,and disaster reduction.关键词
水动力模型/河道清淤/挖方量/洪水淹没Key words
hydrodynamic model/channel desilting/excavation volume/flood inundation分类
建筑与水利引用本文复制引用
同玉,贾金睿,侯精明,景静,张凡,周庆诗,王添,刘玉玲..基于水动力模型的河道清淤方案比选研究[J].人民珠江,2025,46(4):92-100,9.基金项目
国家自然科学基金资助项目(52009104) （52009104）
陕西省联合基金重点项目(2022JC-LHJJ-09) （2022JC-LHJJ-09）
陕西省重点研发计划(2023GXLH-042) （2023GXLH-042）
中德合作交流项目(M-0427) （M-0427）
