1、山東大學(xué)碩士學(xué)位論文公路隧道位移反演及其穩(wěn)定性分析姓名:王向剛申請(qǐng)學(xué)位級(jí)別:碩士專(zhuān)業(yè):巖土與結(jié)構(gòu)工程指導(dǎo)教師:李術(shù)才20050518山東大學(xué)碩士學(xué)位論文ABSTRACTAccordingtotheon。sitemeasureddata,thepaperfoundsasetofconvenientandpracticalmethodsaboutthebackanalysisoftunneIdisplacementandthestabili
2、tyanalysisofsurroundingrockWhentheyareappliedtothepracticalengineering,acertaineconomicperformanceisobtainedTheprimarycoverageisasfollows:BasingonthebasaltheoryabouttheNeuralnetworkandthedirectbackanalysisofdisplacement,
3、theprogramonbackanalysisofdisplacementiscomposedwiththecomputerlanguage‘‘Matlab’’andtestifiedbysomeearth—retainingwallOnaccountofthemonitoringdataofMiaoyaTunnel,thepaperinterchangestheparametersofsurroundingrockandthecoe
4、fficientoflateralpressureofinsitustressesFurthermorethepaperdoesresearchonthestabilityofthesurroundingrockinaccordwithitThroughthenumericalsimulationthepaperstudiesthevariationlawonthedisplacementofsurroundingrockversust
5、hedepthofburialandthecomputationformulaisfoundedThroughanalyzingthree—dimensionaleffectoftunnelexcavation,thecoefficientofthreedimensionaleffectinMiaoyaTunnelisobtained一Simulatingthetunnelwithshallowdepthandeccentricalco
6、mpressionwithnumericalsimuFationtechniques,itisknownhowthebolt—shotcretesupport,theunsymmetricallyloading,waterandetcaffectonthestabilityofsurroundingrockBoltantshotcretingrestrictverymuchthedeformationandtheplasticzoneB
7、ecauseofterrainstheunsymmetricallyloadinghasanimportanteffectoninducedstressfieldofsurroundingrockSothebiastunnelmakesagreatdifferenceinthestressfieldandplasticzoneofsurroundingrockTheshallowburialofthetunneldirectlychan