Page 193 - 《水资源与水工程学报》2022年第5期
P. 193
! 33 " ! 5 # & ' ( ) & * + , - Vol.33No.5
2022 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2022
DOI:10.11705/j.issn.1672-643X.2022.05.24
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HIJKL:P642.22;TV16 MNOPQ:A MRSL:1672643X(2022)05018911
Stabilityofrock-soilslopesunderrainfallinfiltration
anditsinfluencingfactors
WUXumin,YANGYi,YEZhicheng
(FacultyofPublicSecurityandEmergencyManagement,KunmingUniversityofScienceandTechnology,Kunming650032,China)
Abstract:Inordertoevaluatetheimpactofrainfallinfiltrationonslopestability,aprojectslopein
southwestChinaisselectedforthesimulation.Accordingtotheactualrainfallconditionsinthearea,
GeoStudioandothersoftwaresareusedtoestablishthemodelandselecttheparameters.Theslopestabil
ityconsideringrainfallduration,intensity,mainrainfalltypesandearlyrainfallisanalyzedbyfiniteele
mentmethod.Theresultsshowthatshortterm heavyrainfallwillcausetheslopestabilitytodecline
sharplyinashorttime ,whichwillposeagreatthreattothesafetyoftheslope;thesafetycoefficientof
slopeisaffectedbythelagofrainfallinfiltration.Thenthesensitivityofinfluencingfactorsofslopestabil
ityarecomparedandanalyzedbysinglefactoranalysismethod ,andthesensitivityrelationshipbetween
differentinfluencingfactorsofdifferentrockandsoillayersisobtained,whichisofacertainreferential
valueforslopestabilityanalysisinpracticalengineering.
Keywords:rainfallinfiltration;rock-soilslope;slopestability;rainduration;rainintensity;main
rainfalltype ;earlyrainfall;numericalsimulation
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