燃?xì)鈨?nèi)爆作用下綜合管廊響應(yīng)特征研究

燃?xì)鈨?nèi)爆作用下綜合管廊響應(yīng)特征研究燃?xì)鈨?nèi)爆作用下綜合管廊響應(yīng)特征研究

摘要：

為了研究燃?xì)鈨?nèi)爆對綜合管廊的影響，本文通過數(shù)值模擬方法建立了一組燃?xì)鈨?nèi)爆數(shù)值模型，考察了其在綜合管廊中的傳播特征、力學(xué)響應(yīng)特征和破壞機理。研究發(fā)現(xiàn)，燃?xì)鈨?nèi)爆的傳播路徑在綜合管廊中呈現(xiàn)出沿管道縱向和橫向傳播兩種方式，同時也呈現(xiàn)出被截留和逃跑兩種情況。此外，在燃?xì)鈨?nèi)爆作用下，綜合管廊中較容易出現(xiàn)振動和剪切力，破壞形式主要集中在管道局部的擠壓和切割，而一些相鄰的管道間隔也會出現(xiàn)破壞。為了減少燃?xì)鈨?nèi)爆對綜合管廊造成的損害，可以通過設(shè)置破碎區(qū)、加大隔離間距等手段來提高管道的防護(hù)能力。

關(guān)鍵詞：燃?xì)鈨?nèi)爆；綜合管廊；傳播特征；力學(xué)響應(yīng)特征；破壞機理

ABSTRACT：

Inordertostudytheinfluenceofgasexplosionsoncomprehensivepipegallery,asetofnumericalmodelsofgasexplosionswereestablishedbyusingnumericalsimulationmethod,andthepropagationcharacteristics,mechanicalresponsecharacteristicsanddestructionmechanismofgasexplosionsincomprehensivepipegallerywereinvestigated.Itwasfoundthatthepropagationpathofgasexplosionsincomprehensivepipegalleryshowedtwowaysoflongitudinalandtransversepropagation,andtwocasesofinterceptionandescape.Inaddition,undertheactionofgasexplosion,vibrationandshearforcearemorelikelytooccurinthecomprehensivepipegallery,andtheformofdamageismainlyconcentratedinthelocalextrusionandcuttingofpipelines,whilesomeadjacentpipelineintervalswillalsoappeardamage.Inordertoreducethedamagecausedbygasexplosiontocomprehensivepipegallery,theprotectiveabilityofpipelinescanbeimprovedbysettingfragmentedzones,increasingisolationintervalsandothermethods.

Keywords:gasexplosion;comprehensivepipegallery;propagationcharacteristics;mechanicalresponsecharacteristics;destructionmechanisGasexplosionsinthecomprehensivepipegalleryhavebeenknowntocauseextensivedamagetothepipelinesandadjacentareas.Thepropagationcharacteristicsandmechanicalresponsecharacteristicsofgasexplosionsinthecomprehensivepipegalleryhavebeenextensivelystudied.Thedestructionmechanismintheeventofagasexplosioninvolvesthepropagationoftheblastwaveandthesubsequentreleaseofthermalenergy.

Thelocalextrusionandcuttingofpipelinesarethemostcommondamagepatternsobservedinagasexplosion.Adjacentpipelineintervalscanalsosufferdamageduetotheblastwaveandthermalenergyreleasedduringtheexplosion.Inordertoreducethedamagecausedbygasexplosionsinthecomprehensivepipegallery,itisimportanttoimprovetheprotectiveabilityofpipelines.

Oneeffectivemethodistosetfragmentedzonesthatcanabsorbtheimpactoftheblastwaveandreducethepressureonthepipelines.Increasingisolationintervalscanalsoreducetheriskofdamagetoadjacentpipelines.Othermeasuressuchastheuseofexplosion-resistantmaterialsandtheinstallationofpressurereliefdevicescanhelptomitigatetheeffectsofgasexplosionsinthecomprehensivepipegallery.

Inconclusion,preventinggasexplosionsinthecomprehensivepipegalleryisofutmostimportanceasitcancauseextensivedamagetothepipelinesandadjacentareas.TheimplementationofeffectivemeasuresthatimprovetheprotectiveabilityofpipelinescansignificantlyreducetheriskofdamageandensurethesafetyofthesurroundingareasEffectivemethodsformitigatinggasexplosionhazardsinpipelinesystemsincludetheinstallationofsafetyvalves,pressurereliefdevices,andflamearrestors.Safetyvalvesandpressurereliefdevicesaredesignedtoautomaticallyopenwhengaspressureexceedsapredeterminedlevel,releasingthepressureandpreventingapotentialexplosion.Flamearrestorsaredevicesthataredesignedtopreventthepropagationofflamesthroughpipes,canisters,orotherpathwaysintheeventofanexplosion.

Anotherimportantaspectofgasexplosionpreventionispropermaintenanceandoperationofpipelinesystems.Correctinstallation,inspection,andmaintenanceofpipelinesystemscanhelptoidentifyandfixpotentialhazardsbeforetheybecomeseriousproblems.Regularinspectionandtestingofpressurereliefdevices,safetyvalves,andothersafetyequipmentcanhelptoensurethatpipelinesystemsarefunctioningproperlyandareabletorespondtoemergenciesquicklyandeffectively.

Inadditiontosafetyequipmentandmaintenance,effectivecommunicationandemergencyresponseproceduresarealsoessentialforpreventinggasexplosionsinpipelinesystems.Clear,concisecommunicationofsafetyprotocolsandprocedurescanhelptopreventaccidentsandminimizepotentialdamageintheeventofanemergency.Emergencyresponseplansshouldincludeclearinstructionsforshuttingdown,isolating,andevacuatingaffectedareasintheeventofagasleakorexplosion,aswellasproceduresforquicklycontainingandcontrollinganyfiresthatmayoccur.

Finally,itisimportanttorememberthatpreventionisalwaysthebeststrategyforavoidinggasexplosionhazardsinpipelinesystems.Byregularlymonitoringandassessingpotentialhazards,implementingsafetymeasuresandprotocols,andeducatingstaffandstakeholdersonsafepractices,pipelineoperatorscanensurethattheyaredoingeverythingpossibletopreventgasexplosionsandprotectthesafetyofthesurroundingcommunityInadditiontothestepsoutlinedabove,pipelineoperatorscanalsotakeadvantageoftechnologicaladvancementstofurtherenhancesafetyandpreventgasexplosionhazards.Forexample,pipelinemonitoringsystemscanbeutilizedtocontinuouslymonitorpipelinepressure,temperature,andotherparametersthatmayindicatepotentialsafetyissues.Thesesystemscanprovidereal-timealertsandalarmstopipelineoperators,allowingthemtoquicklyrespondtoanysafetyconcernsoranomaliesbeforetheyescalateintoserioushazards.

Anothertechnologicalsolutiontopreventgasexplosionsinpipelinesistheuseofintelligentsoftwarethatemploysmachinelearningalgorithmstoanalyzevastamountsofdatafrompipelinesensorsandothersources.Thesetoolscandetectanomaliesandpatternsinthedatathatmightindicateapotentialsafetyissue,evenbeforeitbecomesapparentthroughphysicalinspectionsorothermeans.Bycontinuouslyanalyzingdatafrompipelines,thesesystemscanhelpoperatorsdetectandrespondtopotentialhazardsinatimelyandeffectivemanner.

Overall,preventinggasexplosionsinpipelinesystemsrequiresamulti-facetedapproachthatincludesregularmonitoringofpotentialhazards,theimplementationofsafetyprotocolsandprocedures,trainingandeducationofstaffandstakeholders,andtheuseof