综合方法评价河南嵩县德亭老道沟滑坡成因机制与稳定性  

Comprehensive evaluation of the genetic mechanism and stability ofLaodaogou landslide in Deting, Songxian County of Henan

作　　者：汪洋 施强 杜晓阳 黄天浩 WANG Yang;SHI Qiang;DU Xiaoyang;HUANG Tianhao(Henan First Geological and Mineral Survey Institute Co.,Ltd.,Luoyang 471023,Henan,China;Henan Provincial Ecological Environment and Exploration Geochemical Application Engineering Technology Research Center,Luoyang 471023,Henan,China)

机构地区：[1]河南省第一地质矿产调查院有限公司,河南洛阳471023 [2]河南省生态环境与勘查地球化学应用工程技术研究中心,河南洛阳471023

出　　处：《矿产与地质》2023年第4期851-858,共8页Mineral Resources and Geology

基　　金：2021年度中央财政自然灾害防治体系建设补助资金项目(豫地灾项目[2021]21号)资助。

摘　　要：以河南省嵩县德亭老道沟滑坡体为研究对象,通过地面调查、无人机航拍、物探、钻探、岩土测试等多种方法手段,从滑坡的平面形态、坡体结构、岩性特征等,多角度勘查滑坡的基本特征,分析了滑坡形成机理。进而运用极限平衡法,针对不同工况条件,对滑坡进行了稳定性评价,并提出治理措施,为后期工程治理提供依据。研究表明:目前滑坡基本稳定,因高速公路切坡,降低了滑坡稳定性,极端降雨条件下存在滑移的可能;成灾模式属基覆界面滑动模式。建议采取“搬迁避让+抗滑桩+排水沟+跟踪监测”的综合治理方案。In this paper,Deting Laodaogou landslide in Songxian County,Henan Province is taken as the research object.Through ground survey,UAV aerial photography,geophysical exploration,drilling,geotechnical testing and other methods,the basic characteristics of landslide are explored from multiple angles from the plane form of landslide,slope structure,lithology characteristics and so on,and the formation mechanism of landslide is analyzed.Then the limit equilibrium method is used to evaluate the stability of the landslide according to the different working conditions,and the treatment measures are put forward to provide the basis for the later project treatment.The result shows that the landslide is basically stable at present,but the cutting slope of expressway reduces the stability of landslide,and there is the possibility of slippage under extreme rainfall conditions.The disaster mode belongs to the base-covering interface sliding mode.It is suggested to adopt a comprehensive treatment scheme of"removal avoidance+anti-slide pile+drainage ditch+tracking monitoring".

关 键 词：滑坡 成因机制 稳定性评价 变形破坏模式 

分 类 号：P642.22[天文地球—工程地质学]