28工程前沿2023年第02期总第130期工程技术研究贵州某硬、软间层滑坡形成机理及稳定性评价陈开能贵州有色地质工程勘察公司，贵州贵阳550002摘要：间层指岩性不同的两巨厚岩石大层相间。文章以贵州某硬、软间层牵引式顺层岩质滑坡为例，对该滑坡形成机理进行分析，认为硬、软岩层间层组成的顺层岩质斜坡滑坡主滑带一般分布在两硬岩间的软岩间层中。通过滑坡稳定性分段计算分析，滑坡主滑段稳定性较滑坡整体稳定性差，符合牵引式滑坡沿斜坡坡脚自下而上逐级牵引变形破坏的特征。此滑坡稳定性计算方法和评价过程对于类似地质结构的滑坡研究与防治具有一定的借鉴意义。关键词：间层；顺层；牵引式；岩质滑坡；主滑段；稳定性Abstract:Theinterlayerreferstotheinterbeddingoftwohugethickrocklayerswithdifferentlithology.TakingahardandsoftinterlayertractivebeddingrocklandslideinGuizhouasanexample,thispaperanalyzestheformationmechanismofthelandslide.Itisconsideredthatthemainslidingsectionofbeddingrockslopelandslidecomposedofhardandsoftinterlayerisgenerallydistributedinthesoftinterlayerbetweentwohardrocks.Throughthecalculationandanalysisoflandslidestabilityinsections,thestabilityofthemainslidingsectionofthelandslideisworsethanthestabilityoftheoveralllandslide,whichisinlinewiththecharacteristicsofthetractivelandslidedeformationandfailurestepbystepfromthebottomtothetopalongtheslopetoe.Thecalculationmethodandevaluationprocessoflandslidestabilityhavecertainreferencesignificanceforlandslideresearchandpreventionofsimilargeologicalstructures.KeyWords:interlayer;bedding;tractive;rocklandslide;mainslidingsection;stability分类号：P642.22FormationMechanismandStabilityEvaluationofaHardandSoftInterlayerLandslideinGuizhouCHENKainengGuizhouNonferrousGeologicalEngineeringSurveyCompany,Guiyang550002,Guizhou,China009.DOI:10.19537/j.cnki.2096-2789.2023.02.作者简介：陈开能，男，本科，工程师，研究方向为水工环地质调查评估、工程地质勘察、地质灾害防治工程设计。贵州全省共有125.8万座山头，采矿及工程建设等人类活动几乎都在山体斜坡范围进行。由上覆硬岩与下伏软岩间层组成的上硬下软型顺层岩质斜坡，是贵州地区较为常见的斜坡结构。由于斜坡上层硬岩与下层软岩存在力...
