ANALYSISONTHEINFLUENCEOFROCKCREEPONMECHANICALBEHAVIOROFSEGMENTALLININGOFSHIELDMINEINCLINEDSHAFT

ANALYSISONTHEINFLUENCEOFROCKCREEPONMECHANICALBEHAVIOROFSEGMENTALLININGOFSHIELDMINEINCLINEDSHAFT.pdf
ItisanewtopicconstructinglonginclinedshaftsusingshieldmachineorTBM,whichisofgreatsignificancetoshorteningshaftconstructionperiod,enhancingsecurityanddecreasingcosts.Whencrossingthroughhighin-situstressofdeepburiedsections,thelong-termsecurityofshaftstructuremaybethreatenedbyrockcreep.Anumericalmodelisestablishedconsideringrockcreeptostudytheinfluenceofshaftdepthsandsegmenteffectivebendingrigidityratiostosegmentmechanicalcharacteristicindex,includingbendingmoment,axialforceandsafetyfactor,basedontheshieldinclinedshaftsofShenhuaXinjieTaigemiaoMineProject.Theresultsshowthattherockcreepinfluencecanlastforabout30days,whichleadstothedecreasingofmaximumbendingmomentandtotheincreasingofthesafetyfactor,whilehasanegligibleimpactonaxialforce.Withthelinearincreaseofshaftdepth,themaximumbendingmomentaswellastheaxialforceincreaseapproximatelylinearly,whilethesafetyfactordecreaseswithaslowerratio.Segmenteffectivebendingrigidityratioshaveanegligibleimpactonliningbendingmoment,axialforceandsafetyfactor.
作者：QIChunHEChuanFENGKunWANGDongbingYANQixiangHUXiongyu
作者单位：MOEKeyLaboratoryofTransportationTunnelEngineering,SouthwestJiaotongUniversity,Chengdu610031,China
母体文献：第八届中日盾构隧道技术交流会论文集
会议名称：第八届中日盾构隧道技术交流会  
会议时间：2015年9月9日
会议地点：南京
主办单位：中国土木工程学会,中国岩石力学与工程学会,中国公路学会
语种：chi
分类号：
关键词：shieldmethod  mineinclinedshafts  rockcreep  supportingstructure  mechanicalcharacteristics
在线出版日期：2018年11月22日
基金项目：
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ANALYSISONTHEINFLUENCEOFROCKCREEPONMECHANICALBEHAVIOROFSEGMENTALLININGOFSHIELDMINEINCLINEDSHAFT.pdf

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