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地铁隧道水平冻结压力的监测与分析.docx

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地铁隧道水平冻结压力的监测与分析 Abstract MonitoringandAnalysisofHorizontalFreezingPressureinSubwayTunnels Withtheincreasingdemandforurbantransportation,subwayconstructionhasbecomemoreandmorepopular.However,subwaytunnelsareusuallybuiltincomplexgeologicalandhydrologicalconditions,whichhaveposedgreatchallengestotheirconstruction.Amongthem,theissueofwaterinrushisoneofthemostseriousproblems.Horizontalfreezingmethodiscommonlyusedtocontrolwaterinrush,whichneedstobemonitoredcarefullyduringconstruction.Theobjectiveofthispaperistopresentasystematicevaluationofthemonitoringandanalysisofhorizontalfreezingpressureinsubwaytunnels.Thispaperwillfocusonthemonitoringandanalysisofhorizontalfreezingpressureinsubwaytunnels,includingtheprinciplesoffreezingmethod,theselectionofmonitoringpoints,thedataacquisitionandanalysis,andthesummaryofthemonitoringresults.Theaimistoprovideareferenceforthesafeandefficientconstructionofsubwaytunnels. 1.Introduction Subwayconstructionhasbecomeoneofthemostimportantprojectsinurbaninfrastructuredevelopment.However,thegeologicalandhydrologicalconditionsintheconstructionofsubwaytunnelsarecomplex,especiallyinareaswithhighgroundwatertables.Therefore,theproblemofwaterinrushintosubwaytunnelsisamajorconcernduringconstruction.Horizontalfreezingmethodiscommonlyusedtocontrolwaterinrush,whichensuresthesafetyandstabilityofthesubwaytunnels. Monitoringofhorizontalfreezingpressureisanessentialpartoftheconstructionprocesstoensurethestabilityofthesurroundinggroundandthesafetyofthesubwaytunnel.Monitoringandanalysisofhorizontalfreezingpressureiscrucialforthesuccessfulimplementationofthefreezingmethod.Inrecentyears,researchershavemadesignificantprogressinmonitoringandanalysisofhorizontalfreezingpressure.However,therearestillsomechallengesindataacquisitionandanalysis,whichneedtobeaddressed. 2.PrinciplesofFreezingMethod Theprincipleofhorizontalfreezingmethodistocreateafrozenwallaroundthetunnelperimeter.Inordertoachievethis,aseriesofmetalpipesareinstalledaroundthetunnelperimeterwithintervalsof1-