隧道工程项目英语

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1、隧道工程项目英语TableofContents8.1.5tunnel28.1.5.1typeoftunnel28.1.5.1.1classifiedbyconstructionmethod28.1.5.1.2classifiedbyshapeofcross-section28.1.5.2constructionmethod38.1.5.2.1constructionprocedure38.1.5.2.2TBMmethod48.1.5.2.3dillandblast58.1.5.2.4cutandcover78.1.5.2.5ventatilation8

2、8.1.5.2.3lightingsystem98.1.5.2.4tunnelfinishes98.1.5.3glossary…….10Page1of188.1.5tunnel8.1.5.1typeoftunnel8.1.5.1.1classifiedbyconstructionmethod8.1.5.1.2classifiedbyshapeofcross-sectionPage2of188.1.5.2constructionmethod8.1.5.2.1constructionprocedurePage3of188.1.5.2.2TBMmethodW

3、hattmbis:WhatpartsincludedinTMBModernTBMstypicallyconsistoftherotatingcuttingwheel,calledacutterhead,followedbyamainbearing,athrustsystemandtrailingsupportmechanisms・WhatsoilconditionsappliedinInhardrock,eithershieldedoroperetypeTBMscanbeused.AlltypesofhardrockTBMsexcavaterockus

4、ingdisccuttersmountedinthecutterhead・Infracturedrock,shieldedhardrockTBMscanbeused,whicherectconcretesegmentstosupportunstabletunnelwallsbehindthemachine.Insoftground,therearethreemaintypesofTBMs:EarthPressureBalaneeMachines(EPB),SlurryShield(SS)andopen・facetype・Bothtypesofclose

5、dmachinesoperatelikeSingleShieldTBMs,usingthrustcylinderstoadvanceforwardbypushingoffagainstconcretesegments.MeritandweaknessTBMshavetheadvantagesoflimitingthedisturbaneetothesurrounclinggroundandproducingasmoothtunnelwall.Thissignificantlyreducesthecostofliningthetunnel,andmake

6、sthemsuitabletouseinheavilyurbanizedareas・Themajordisadvantageistheupfrontcost.TBMsareexpensivetoconstruct,andcanbedifficulttotransport・TBMsismuchmoreefficientandresultsinshortenedcompletiontimes(whentheyoperatesuccessfully).Page4of18TBMprocedure8.1.5.2.1dillandblastWhatdillandb

7、lastmethodisDrillingandBlastingisthecontrolleduseofexplosivesandothermethodssuchasgaspressureblastingpyrotechnics,tobreakrockforexcavation.Itispracticedmostofteninmining,quarryingandcivilengineeringsuchasdamorroadconstruction.TypeofdrillandblastTYPE1:Twinsidewalldriftfaceexcavat

8、ionPage5of18TYPE2:Singlesidewalldriftfaceexcava