华南地质2024，Vol.40Issue(1)：162-170,9.DOI:10.3969/j.issn.2097-0013.2024.01.012
清江流域覃家田滑坡成因机制及稳定性分析
Formation Mechanism and Stability Analysis of Qinjiatian Landslide of Qingjiang River Basin
摘要
Abstract
Qinjiatian landslide,located in Geheyan Reservoir area of Qing River basin,is a representative of the slip of limestone along the soft interlayer in the slope area.The deformation of leading edge of the bank is obvious after water storage,and its stability is directly related to the safety of 12 people from 3 families and the normal operation of the Geheyan reservoir.By means of field investigation,engineering geological sur-veying,drilling and trenching,the formation conditions of the landslide are found out,the formation evolu-tion and mechanism of the landslide are analyzed,and the stability of the landslide is calculated by using the limit equilibrium analysis method.The results show that the stability of the landslide is relatively well and mainly affected by external dynamic factors such as rainstorm,fluctuation of reservoir water level,etc.,how-ever,under the condition of heavy rainfall and sudden drawdown of reservoir water level,the stability coeffi-cient decreases and local collapse may occur.关键词
清江流域/滑坡/成因机制/稳定性评价Key words
Qingjiang River Basin/Landslide/Formation mechanism/Stability analysis分类
天文与地球科学引用本文复制引用
闫举生,谭建民,章昱..清江流域覃家田滑坡成因机制及稳定性分析[J].华南地质,2024,40(1):162-170,9.基金项目
中国地质调查局项目(DD20221740、1212011140009) （DD20221740、1212011140009）
