资源描述：
《新奥法英文文献翻译》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、NATMtunneldesignprincipleintheconstructionofmajorandConstructionTechnologyI.TheNATMDesignPrinciple1.TunneldesignandconstructionoftwomajortheoreticalanddevelopmentprocessSincethe20thcentury,humanspaceonthegroundfloorofthegrowingdemand,thustheundergroundw
2、orksofthestudyofarapiddevelopment.Inalargenumberofundergroundengineeringpractice,itisgenerallyrecognizedthatthetunnelandundergroundcavernproject,thecoreoftheproblem,allupintheexcavationandretainingtwokeyprocesses.Howexcavation,itwillbemoreconducivetothe
3、stabilityandcavernfacilitatesupport:Formoresupport,supportinghowtheycanmoreeffectivelyensurestabilityandfacilitatethecavernexcavation.Thisisthetunnelsandundergroundworkstwopromoteeachotherandcheckeachother'sproblems.Tunnelsandundergroundcaverns,andfocus
4、ingonthecoreissueswiththeabovepracticeandresearch,indifferentperiods,Peopleofdifferenttheoriesandgraduallyestablishedasystemofdifferenttheories,Eachsystemincludestheoryandresolve(orarestudyingtheresolution)fromtheworksofunderstanding(concept),mechanics,
5、engineeringmeasurestotheconstructionmethods(Technology),aseriesofengineeringproblems.Atheoryofthe20thcenturythe1920sthetraditional"loadrelaxationtheory."Itscorecontentis:astablerockself-stability,noload:unstablerockmayhavecollapsed.needshoringstructuret
6、obesupported.Thus,theroleofthesupportingstructureoftherockloadiswithinacertainrangemaybeduetorelaxationandcollapseofrockgravity.Thisisatraditionaltheory,andtheirrepresentativeisTaishajiandPrincipe'sandothers.Itworkssimilartothesurfaceissuesofthethinking
7、isstillwidelyusedto.Anothertheoryofthe20thcenturymadethe1950sthemoderntheoryoftimberingor"rockforthetheory."Itscorecontentis:rockstabilityisclearlybearingrocktotheirownself-stability:unstablerocklossofstabilityisaprocess,andifthisprocessinprovidingthene
8、cessaryhelporrestrictionswillstillbeabletoentertherocksteadystate.ThistheoreticalsystemofrepresentativecharactersLabuxiweici,Miller-Feiqieer,Fenner-DaluoboandKashitenaiothers.Thisisamoremoderntheory,itisalreadyoutofthegroundworks
