中国防汛抗旱2025，Vol.35Issue(3)：39-45,7.DOI:10.16867/j.issn.1673-9264.2024087
北京门头沟区"23·7"特大暴雨诱发地质灾害特征及分布规律研究
Study on the characteristics and distribution patterns of geological hazards induced by the"23·7"extreme heavy rainstorm in Mentougou District of Beijing City
摘要
Abstract
From July 29 to August 2 in 2023,Mentougou District in Beijing City encountered extreme heavy rainfall,which induced geological disasters such as hilly collapse,landslide,debris flow and ground collapse.Based on the results of post-disaster investigation,the characteristics of geological disasters in Mentougou district are obtained,the distribution relationship between geological disaster events and elevation,topographic fluctuation,slope aspect,stratigraphic lithology and fault structure is analyzed,and the relationship between geological disaster events and rainfall is discussed.The analysis results show that the geological disasters induced by the"23·7"extraordinarily heavy rainstorm have the characteristics of strong group occurrence,multiple types,small scale,multiple types of threat objects and serious disasters,geological hazards are more developed in the 0～800 m elevation range,50～200 m topographic relief section,and eastward to southwestward slopes;geological hazards are most developed in the Jurassic strata,accounting for 42.64%of the total number of disaster events;The number of geologic hazards is positively correlated with rainfall,and the greater the rainfall,the stronger the degree of occurrence of geological hazards,and the rainfall intensity is the key factor affecting the occurrence of geological hazards.关键词
地质灾害/特征/分布规律/"23·7"特大暴雨/北京/门头沟区Key words
geological hazards/characteristics/distribution patterns/"23·7"extraordinarily heavy rainstorm/Beijing/Mentougou District分类
天文与地球科学引用本文复制引用
郭英,申健,刘晓晓,周亮,石向菲,王聪毅..北京门头沟区"23·7"特大暴雨诱发地质灾害特征及分布规律研究[J].中国防汛抗旱,2025,35(3):39-45,7.基金项目
北京市委托专项课题(11000022T000000439462) （11000022T000000439462）
北京市委托专项课题(11000023T000002059415). （11000023T000002059415）
