高地應(yīng)力區(qū)域TBM組裝洞室圍巖穩(wěn)定性分析與錨桿參數(shù)優(yōu)化.pdf

1、西南交通大學碩士學位論文高地應(yīng)力區(qū)域TBM組裝洞室圍巖穩(wěn)定性分析與錨桿參數(shù)優(yōu)化姓名：肖海波申請學位級別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：高波20100601西南交通大學碩士研究生學位論文第1I頁曼量曼曼I————I—II|IIII—I二II皇曼AbstractWiththefasteconomicdevelopmentofchina，manymoreconstructionswerecarriedoninthefieldofthehy

2、droelectricpowerwaterconservancyrailwayhighwayandminingTherelatedundergroundtunneltendstobedeeperandlongerandlargerItwasverifiedbyamountofengineeringconstructionsthatthepresenceofhighin—situstresswastheimportantfactorsth

3、atinfluencethestabilityofthehighdeeptunnelAbundantresearchesonthesurroundingrockstabilityofthetunnelsubjectedtothehigIlinsitustresswerecarriedonindomainandabroadMostoftheanalysiswasfocusedontheseparatedengineeringconstru

4、ctionThecomprehensiveanalysissystemonthesurroundingrockstabilityfailuremodesandthebuildingprogramdecisionwasinlackThesurroundingrockanalysisresultsfromtheordinaryconditionsmethodsCannotconformtothepracticalstatus，especia

5、llyinoppositeInthispaperbasedontheexcavationoftheTBMassemblingtunnelintheNo3hydropowertunnelofJinPingsecondlevelhydropowerstation，studiedthatthedeformationofthesurroundingrockandthedistributionofstressunderthesituationof

6、highin—situstressThroughamulti—indexanalysisandcomprehensiveevaluationtodeterminethereasonableexcavationmethodandtheboltingparametersofthetunnelThisarticlereadsasfollows：(1)Basedontheknowledgeoftheregionalinsitustressfor

7、mingconditionsandinfluencefactorthecomputemethodontheregionalinsitustressWaspresentedThe3Din—situstressinversionWasanalyzedwithregressionmethodindefiniteelementmodelThenecessarytechnicalpreparingforthenumericalstabilitya

8、nalysisofthetunnelsubjectedtothehi。ghin—situstressWasafforded(2)Thedamagecharacteristicsandevolutionprocedureofthesurroundingrockinhi曲in—situstressconditionisapparentlydifferentfrominordinarygeologyconditionsConsideringt

9、hedamagecharacteristicsandrulesofthesurroundingrockinhighin—situstress，thesurroundingrockstabilityindexeswerepresentedsuchasthesurroundingrockstressrelaxratiosymbolizingthefailurelevel，surroundingrocksafetyratio，damagedo

10、mainenergytransferringandreleaseratioFurthermore，thefractionalaverageenergyreleaserate；anewforecastindexoftherockburstWaSaffordedbasedontheenergyreleasedisciplinesThecomprehensiveanalysissystemincludingthesurroundingrock

11、stabilityrockburstandprogramoptimizeWasconcludedbasedonthemultigoalsoptimizemethod(3)BasedontheexcavationoftheTBMassemblingtunnelintheNo3hydropowertunnelofJinPingsecondlevelhyaropowerstation，systematicallycarriedonstabil

12、ityanalysisofundergroundwithdifferentexcavationprogramsandexcavationfootageThroughthevalueoffractionalaverageenergyreleaserate，conductedrockburstexploratorystudyFinallyareasonableplanofexcavmionandexcavationfootagehasbee