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侧向岩溶分布对隧道围岩稳定性影响的规律分析.docx

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侧向岩溶分布对隧道围岩稳定性影响的规律分析 Title:AnalysisoftheImpactofLateralKarstDistributionontheStabilityofTunnelSurroundingRocks Abstract: Karstisacommongeologicalphenomenoncharacterizedbythedissolutionofsolublerockssuchaslimestoneandgypsum.Thepresenceofkarstfeaturesposessignificantchallengestotunnelconstructionandstability.Thispaperaimstoanalyzetheimpactoflateralkarstdistributiononthestabilityoftunnelsurroundingrocks.Byunderstandingthepatternsandmechanismsofkarstformation,engineerscaneffectivelyassesstherisksassociatedwithkarstanddevelopappropriatemeasurestoensurethestabilityoftunnelstructures. 1.Introduction: Tunnelsarecrucialcomponentsoftransportationinfrastructure,providingefficientandconvenienttransportationroutes.However,tunnelsencounteringkarstareasfaceuniquechallengesduetotheunstablenatureofkarstlandscapes.Thelateraldistributionofkarstfeaturessignificantlyinfluencesthestabilityoftunnelsurroundingrocks.Itisnecessarytoinvestigatethegeologicalconditionsandevaluatethepotentialriskstoensuresafeandsuccessfultunnelconstruction. 2.KarstFormationProcesses: Karstformationisacomplexgeologicalprocessthatresultsfromthedissolutionofsolublerocksbygroundwater.Limestoneandgypsumarecommonrocktypessusceptibletokarstification.Thedissolutioncancreatevariouskarstfeatures,includingsinkholes,caves,andundergroundrivers.Themechanismsofkarstformationincludechemicaldissolution,mechanicalerosion,andsuffosion.Theunderstandingoftheseprocessesiscrucialtoanalyzetheimpactofkarstontunnelstability. 3.InfluenceofLateralKarstDistributiononTunnelStability: 3.1.SurfaceSubsidence:Thepresenceofkarstfeaturescanleadtosurfacesubsidence,resultinginsettlementanddeformationofthetunnel.Thecollapseofundergroundcavitiescancausesinkholesandfractures,posingriskstotheintegrityofthetunnelstructure. 3.2.WaterInflow:Karstlandscapesoftenhaveextensiveundergrounddrainagesystems,whichcanleadtowaterinfiltrationintotunnels.Excessivewaterinflowcanweakenthesurroundingrockmass,potentiallyresultingininstabilityandreducedload-bearingcapacity