大型地下洞室群开挖方案优化数值模拟

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1、北京交通大学硕士学位论文大型地下洞室群开挖方案优化数值模拟姓名：周玲芳申请学位级别：硕士专业：岩土工程指导教师：刘保国20060301Abs缸鼍ctThedi￡fcrentexcavatillgpl锄sofmaincav唧研tIlhjgllsidewall柚dla坦espanwerepreIiⅢinar丑yoptinlized蛐dn哪ericallystimulatcdbyempidcalanal0舒卸dmodelillgcal叫1ation．Anewconstmctionmethod，thatⅡlemiddlcm矗be锄w勰reserved，强

2、dtheupp盯锄dthedo啪IockbeaIIlwcresimultaⅡeouslyexcavated'w勰pmposed；Thestabnityofsurmundjng眦kw鹞analyzed，00nsideringtheinfluenccofmaillfaults，柚dtherelevantpreveⅡti衄mc龉uremeⅡtswercpmposcd．Thein·situsupervi∞柚dme鹬urem即tw硒done，tllercsllltshdwedthatthesurrouⅡdingrockw髂slable粕dthenewcon

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4、empiIicalanalogymetllod，byshoncningtheconstmctionperiod，incfeasillgtheefficiencyofworkersandfacilities，aⅡddecfeasingtlledisturbancebe旧eeneachparallelworkplane，etc．，thefc髂jbleplaIIsformaincavemexcavatioⅡwerecomparcd，andtheconstrIlcti∞metllod'tllatthemidmerockbe锄wasreserved卸dth

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7、1；4BasedoⅡthesjIIlulatedcalculationby印plyiIlgFLAC3D

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9、IefaultsimperiledthestabiljzationofthellIldergI帅ndcavjtywasanalysed，andthercsunshdwedtllattllesu仃。瑚dingroc：I【shadhuges仃essesalldafeasOfdefbmati衄粕dpl盛tidtyamundtheplaceswhercthef孤ltsF4粕dF6intc塔ectcdtlIemaillcavem．Eachfaunw勰a黝odbydif：fj删lldispla懈nents，t0陪ions越Idshea培f如mth

10、esmroundingrocl【s衄bolllsidcsof“，s0thef赴l忸werewhollydcs昀ycd．Thcfaults