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ID:12473024
大小:769.50 KB
页数:60页
时间:2018-07-17
《《铁路隧道洞外控制测量方法设计_毕业设计》》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、兰州交通大学毕业设计XX铁路隧道洞外控制测量方法设计摘要铁路隧道测量的目是保证隧道相向开挖时能按规定的精度正确的贯通,并使各项建筑物按设计位置修建。隧道测量的主要内容包括洞外、洞内施工控制测量、隧道贯通误差的测定及调整、辅助坑道的测量。作为指导隧道施工的测量工作,在隧道开挖前一般要建立具有必要精度的、独立的隧道洞外施工控制网,作为引测进洞的依据;对于较短的隧道,可不必单独建立洞外施工控制网,而以经隧道施工复测、调整后并确认的洞外线路中线控制桩为引测进洞的依据。洞内控制点控制正式中线点(正式中线点是洞内衬砌和洞内建筑物施工放样的依据),正式中线点控制临时中线点;临时中线点控制
2、掘进方向。洞内高程控制与平面相仿,临时水准点控制开挖面的高低,正式水准点控制洞内衬砌和洞内建筑物的高程位置。隧道施工测量过程中肯定会有不可避免的误差,在实际隧道开挖贯通面处存在偏差。隧道贯通面误差主要有三个方面:即沿隧道中线方向的长度偏差为纵向贯通误差;垂直于隧道中线的左右偏差为横向贯通误差;有两进出口端高程控制点分别测得贯通面同一点的高差为高程贯通误差,其中纵向及高程贯通误差对隧道正确贯通影响不大,目前研究隧道贯通误差主要为横向贯通误差。下面主要以隧道洞外控制测量来说明一下在隧道施工测量工作中存在的问题以及通过举例来解决这些问题的方法。关键词:隧道施工测量、控制测量、贯通
3、测量Opinionsandsuggestionsontheparty'smasslineeducationalpracticeAccordingtothecentralandprovincial,municipalunifieddeployment,accordingtomunicipalPartycommittee"aboutcarryingouttheparty'smasslineeducationalpracticeactivityinthecity'simplementationopinions,thespiritoftheparty'smasslineeducat
4、ionalpracticeactivitiesfrom20**inJanuaryto99months,carriedoutatalllevelsofdepartmentsanddirectlyaffiliatedinstitutionsandgrass-rootspartyorganizations.AccordingtomyactualCounty,thecountytocarryouttheeducationpracticeputforwardthefollowingimplementationopinions.First,theoverallrequirementsC
5、ountycountyeducationpracticetotheeighteenPartyofeight,thespiritofthethethirdPlenarySessionofthe18thCPCCentralCommitteeastheguidance,conscientiouslyimplementthespiritofgeneralsecretaryXiJinpingbookseriesofimportantspeech,earnestlyimplementtheCentralCommitteereally,opinionsandadvice><<>,6、tyimplementingtheguidingideologyofopinionstodeterminetheobjectivesandrequirements,stepmethod,inaccordancewiththe""lookinthemirror,dressup,washbath,curetreatment,thegeneralrequirementsof"forthepeoplepragmatichonestpeopleasthetheme,incarryingforwardthespiritofZhuanglangZhuang,improvetheirwor7、kstyle,servicetothemassesofthepeople,thefoundationofconsolidatinggrassroots,promotetransformationacrossefforts,tofurtherimplementthecentraleightregulationsand
6、tyimplementingtheguidingideologyofopinionstodeterminetheobjectivesandrequirements,stepmethod,inaccordancewiththe""lookinthemirror,dressup,washbath,curetreatment,thegeneralrequirementsof"forthepeoplepragmatichonestpeopleasthetheme,incarryingforwardthespiritofZhuanglangZhuang,improvetheirwor
7、kstyle,servicetothemassesofthepeople,thefoundationofconsolidatinggrassroots,promotetransformationacrossefforts,tofurtherimplementthecentraleightregulationsand
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