2022, 41(2) 373-385 DOI:     ISSN: 1004-5589 CN: 22-1111/P

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Keywords
landslide
highdensityelectricalmethod
transientsurfacewavemethod
geneticmechanism
Authors
YUZerui
FANGShi
WANGYan
DUJun
CHENYang
PubMed
Article by Yuzerui
Article by Fangshi
Article by Wangyan
Article by Dujun
Article by Chenyang

Application of comprehensive geophysical prospecting in studying genetic mechanism of Changbai Dahu landslide in JilinProvinc

YUZerui1,2,3 ,FANGShi1,4 ,WANGYan2,3 ,DUJun5 ,CHENYang2,3

1CollegeofEarthSciences,JilinUniversity,Changchun130061,China; 2InstituteofGeologicalMineralSurveyandDesignofJilinProvince,Changchun130012,China; 3GeologyandMineralConstructionGroupCo,LtdofJilinProvince,Changchun130012,China; 4KeyLaboratoryforOilShaleandCoexistingMineralsofJilinUniversity,Changchun130061,China; 5LiaoningEngineeringSurveyandDesignInstituteCo,Ltd,Jinzhou121000,Liaoning,China

Abstract

TakingtheDahulandslideinJiefangvillage,ChangbaiKoreanAutonomousCounty,JilinProvince asanexample,theauthorsmakeacomprehensiveexplorationwiththehelpofhighdensityelectricalmethodand multichanneltransientsurfacewavemethod.Thiscombinedwiththedrillingresults,clarifiestheshape,material compositionandthicknessofthelandslide,infersthelocationoftheslidingsurface,andanalyzestheinfluencing factorsandgeneticmechanismofthelandslide.TheresultsshowthattheDahulandslideisaffectedbylandform,lithology,hydrologicalconditionsandotherfactors.Duetomanualexcavation,theslopetoeisfreeandtension cracksareformedattherearedgeoftheslope.Rainfallinfiltrationreducestheshearstrengthofrockandsoil mass,resultingincreepdeformationalongthefoundationoverburdeninterface(slidingsurface).Withtheaccumulationofslopestress,thedeformationintensifies,andfinallyleadstoslopeinstabilityandfailure.ThegeomechanicalmodeloftheDahulandslideiscreeptensioncrack,anditsevolutionprocessescanbesummarizedintothree stages:landslidecreepdeformation,slopecrackdevelopmentandlandslideslidinginstability

Keywords landslide   highdensityelectricalmethod   transientsurfacewavemethod   geneticmechanism  
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