中国防汛抗旱2026，Vol.36Issue(8)：55-62,8.DOI:10.16867/j.issn.1673-9264.2026359
北京市西部与北部山区暴雨洪水响应机制研究
Study on the rainstorm and flood response mechanism in the western and northern mountainous areas of Beijing
摘要
Abstract
The flood response of a watershed is a systematic product of the combined effects of climatic conditions and underlying surface characteristics.The Qingshuihe River in Mentougou District(west)and the Qingshuihe River in Miyun District(north)in Beijing showed significantly different flood responses in the"23.7"and"25.7"extreme rainstorm respectively at similar watershed scales.Construct a vertical mixing and geomorphic unit line(GIUH)coupled runoff generation and convergence model,combined with digital elevation models,soil hydrological characteristics,topography,lithology,and measured rainfall runoff data,to study the runoff response laws and differences between the two watersheds from the perspectives of underlying surface conditions and runoff generation and convergence mechanisms.The results show that the terrain features of the two watersheds are similar,but the density of the Qingshui River network in Miyun District is 4.4 times that of the Qingshui River in Mentougou District,and the convergence path is concentrated;The runoff parameters show that Qingshui River in Miyun District is more prone to over seepage and runoff,while Mentougou District has stronger infiltration capacity;The GIUH unit line indicates that the peak of the Qingshui River in Miyun District is sharp and thin,and the peak appears early.The study reveals that river network structure,soil lithology,water storage and infiltration capacity are the main control factors of rainstorm flood response in the basin,and the results can provide a reference for mountain flood forecasting.关键词
山区产汇流/海河"23·7"流域性特大洪水/海河"25·7"区域性特大洪水/暴雨洪水响应/北京市Key words
runoff generation and concentration in mountainous areas/Haihe"23·7"basin-wide extreme flood/Haihe"25·7"regional extreme flood/rainstorm flood response/Beijing分类
天文与地球科学引用本文复制引用
陈颖冰,李永坤,赵鑫瑶,胡晓静,张旭旻..北京市西部与北部山区暴雨洪水响应机制研究[J].中国防汛抗旱,2026,36(8):55-62,8.基金项目
国家重点研发计划(2024YFC3012405) （2024YFC3012405）
北京市科技计划课题(Z251100004525022). （Z251100004525022）
