三峡库区白鹤坪滑坡成因机制及危险性综合分析  

Comprehensive analysis on formation mechanism and risks of Baiheping landslide in Three Gorges Reservoir area

作　　者：陈隆刚 杨长明 谢金 范良刚 蒲文 罗锐 CHEN Longgang;YANG Changming;XIE Jin;FAN Lianggang;PU Wen;LUO Rui(Hydrogeology Engineering Geological Team,Chongqing Bureau of Geological Exploration,Chongqing 400700,China)

机构地区：[1]重庆市地勘局208水文地质工程地质队,重庆400700

出　　处：《人民长江》2025年第2期123-133,共11页Yangtze River

基　　金：重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1650)。

摘　　要：三峡库区滑坡等地质灾害频发,对长江航道及当地居民的生命财产安全构成重大威胁,因此深入研究滑坡成因机制及其影响至关重要。以三峡库区白鹤坪滑坡为例,采用地质测绘、钻探和地形地貌分析等多学科方法,并结合实地调查、经验分析、原位和室内试验以及数值模拟等手段,综合分析了白鹤坪滑坡的成因机制及其对长江航道潜在的影响。研究结果表明:白鹤坪1号滑坡主要为推移式滑移破坏,白鹤坪2号滑坡及干井子滑坡表现为推移-牵引复合式破坏;在极端暴雨工况下,白鹤坪1号滑坡表现出显著的前部水平位移,滑坡入江可能引发高达3 m以上的涌浪,对航道安全构成严重威胁。研究成果可为滑坡风险管理和减灾提供科学依据。The frequent occurrence of landslides and other geological hazards in the Three Gorges Reservoir area poses a significant threat to the safety of the Changjiang River navigation and local residents′lives and properties.Therefore,in-depth researches into the causes and mechanisms of landslides and their impacts are essential.Taking the Baiheping landslide in the Three Gorges Reservoir area as a case study,multidisciplinary methods such as geological mapping,drilling,and topographical analysis,combined with field surveys,empirical analysis,in-situ and laboratory experiments,and numerical simulations,were employed to comprehensively analyze the formation mechanism of the Baiheping landslide and its potential impact on the Changjiang River navigation.The results indicate that:the No.1 landslide at Baiheping primarily exhibits a translational slip failure,while the No.2 landslide and the Ganjingzi landslide exhibit a combination of translational and tensile failures.Under extreme rainfall conditions,the No.1 landslide at Baiheping shows significant horizontal displacement at its front.The landslides sliding into the river may cause surges of up to 3 m,posing a serious threat to the safety of the navigation channel.These findings provide a scientific basis for landslide risk management and disaster mitigation.

关 键 词：滑坡基本特征 成因机制 滑坡涌浪 危险性评价 白鹤坪滑坡 三峡库区 

分 类 号：P642.22[天文地球—工程地质学] TV697.3[天文地球—地质矿产勘探]