基于AHP-EWM-FT的岩溶塌陷风险评价-豆柴文库

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基于AHP-EWM-FT的岩溶塌陷风险评价
Title:RiskAssessmentofKarstSubsidenceBasedonAHP-EWM-FT
Abstract:
Karstsubsidenceisacomplexgeologicalphenomenonthathasadverseeffectsoninfrastructureandtheenvironment.Accurateriskassessmentiscrucialforpreventingandmitigatingthepotentialhazardsassociatedwithkarstsubsidence.Inthispaper,weproposeariskassessmentmethodforkarstsubsidencebasedontheAnalyticHierarchyProcess(AHP),theEntropyWeightMethod(EWM),andtheFaultTree(FT)analysis.Theintegratedapproachenablesacomprehensiveevaluationofthemaincontributingfactorsandtheirinteractions,providingamorecomprehensiveunderstandingofkarstsubsidencerisks.Themethodologycombinesexpertknowledgewithquantitativeanalysis,makingitavaluabletoolfordecision-makinginkarstregions.
1.Introduction:
Karstareasarecharacterizedbysolublerocks,suchaslimestoneanddolomite,thatarepronetosubsidenceduetothedissolutionofundergroundwater.Thepresenceofkarstsubsidenceposessignificantriskstoinfrastructure,includingbuildings,roads,andundergroundutilities.Traditionalriskassessmentmethodsoftenfailtoaddressthecomplexityanduncertaintiesassociatedwithkarstsubsidence.Therefore,thereisaneedforamorecomprehensiveandsystematicapproachtoevaluatetherisksinvolved.
2.Methodology:
2.1AnalyticHierarchyProcess(AHP):
TheAHPisamethodforprioritizingdecisioncriteriabasedonthejudgmentsofexperts.Inthecontextofkarstsubsidence,itallowsforthehierarchicalstructuringoffactorsinfluencingtherisk.Theexpertsprovidepairwisecomparisonsofthefactors'importance,andtheweightsarederivedusingmathematicalcalculations.TheAHPhelpstocapturethepreferencesandopinionsofexperts,leadingtoamorewell-roundedriskassessment.
2.2EntropyWeightMethod(EWM):
TheEWMisutilizedtocalculatetheweightsofriskfactorsbasedontheShannonentropytheory.Ithelpstoobjectivelyevaluatetheuncertaintyanddispersionofthefactors.Byconsideringtheinformationcapacityanduniformityofeachfactor,theEWMprovidesamoreaccurateweightingscheme.
2.3FaultTree(FT)Analysis:
FTanalysisisusedtomodelthecausalrelationshipsbetweencontributingfactor