郑州地铁1号线会-民盾构区间锚索拔除施工技术-李广良

2014－01－202014－03－051982—2007。1—李广良(中铁十六局北京轨道交通工程建设有限公司，北京101100)1—。、、3。。DOI10．3973/j．issn．1672－741X．2014．05．016U45B1672－741X201405－0494－05AnchoringCableＲemovingTechnologyCaseStudyonHui-MinShield-boredTunnelonLine1ofZhengzhouMetroLIGuangliangBeijingMetroEngineeringConstructionCo．Ltd．ChinaＲailway16thBureauGroupBeijing101100ChinaAbstractTherearelotsofexistingdeepanchoringcablesinthescopeofHui-Minshield-boredtunnelonLine1ofZhengzhouMetro．Theseanchoringcablesshouldberemovedbeforeshieldarrivesotherwisetheymayhavesevereimpactontheshieldboring．Inthepapercomparisonandcontrastismadeamongthreeanchoringcableremovingtechnologiesi．e．removingtheanchoringcablesfromopen-cutfoundationpitremovingtheanchoringcablesfromminedtunnelandremovingtheanchoringcablesfromcutholesintermsofconstructionperiodandcost．Intheendthetechnologyofremovingtheanchoringcablesfromcutholesisadopted．Thedetailsofthetechnologyofremovingtheanchoringcablesfromcutholesarepresented．Keywordsrailtransitundergroundspaceanchoringcableremovingcut-hole01。。22。2。1。11．11——20m1。800mm、1200mm+—2．26m。86。S1860215°1．2m26m5m21m。1mFig．1Ｒelationshipbetweenanchoringcablesandtunneltobeboredm1．2⑦、⑦－1、⑧、⑨、⑨－1⑨－22。2。32m、、。5．3～9．8m16～31．4m。14m5m。89．5m80m9．5m。2Fig．2Geologicaconditions1．3DN600mm、DN426mm、DN200mm、DN219mm、DN300mmDN500mm3。、、、。3Fig．3Ｒelationshipbetweenutilitypipesandtunnel22．11。2。、。2．21、、23。59451—33．1312110m3。3．23．2．1+。8m80m14m600mm、1000mm。41。4Fig．4Open-cutfoundationpit1Table1Parametersofopen-cutfoundationpit60020m/1605．6m3/m480/m38960/5460916mm/d60/250。1220m234。3．2．2110m5300mmC25500mmC30。。2。5Fig．5Minedtunnel2Table2Parametersofminedtunnel300mm/m3960500mm/m3146042/m900/m38200/d120/60012。123。3．2．316m541．8m。63。6Fig．6Layoutofcut-holes694隧道建设343Table3Parametersofcut-holes150011m/5418m331820d/m3972/7020m/d30/1003．2．44。4Table4Comparisonandcontrastamongdifferentanchoringcableremovingtechnologies。4。750cm。C15。。7mmFig．7Ｒelationshipbetweencut-holeandanchoringcablesmm55．18。8Fig．8Technicalflowchartofremovingofanchoringcables5．2。5．2．13－59。。159mm195mm。。9Fig．9Anchoringcabletakingbymeansofdrillingcase5．2．25．2．2．1、、、I20、、。。5．2．2．2、、79451—。、。5．2．3。16－7234。1。。1m2．4m。0～200r/min2700N·m1800N·m2．5MPa。1．0m159mm15°。108。10Fig．10Anchoringcableremovingbymeansofdrillingrig2。。、。9。3、。。。4。。5①②③。61。。Ｒeferences1．13J．20143431－11．ZHANGWenzheng．DeformationofandnumericalanalysisonfoundationofWangjingxistationonline13ofBeijingMetrocausedbyshieldtunnelingbelowJ．TunnelCons-truction20143431－11．inChinese2．2J．200810127－128．3．C//．2006379．4．J．2006239－4146．5GB50299—1999S．2003．6．M．2004．7DL/T5083—2010S．2010．8．J．20092201－202．9．J．201393956－57．894隧道建设34