大相岭隧道超前地质预报研究

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1、西南交通大学硕士学位论文大相岭隧道超前地质预报研究姓名：白雪飞申请学位级别：硕士专业：地质工程指导教师：白志勇20090301西南交通大学硕士研究生学位论文第1I页AbstractCombiningtheapplicationofPredictiveMethodsandForecastofGeologyinDaxianglingtunneloftheYaan—Luguhighway,thisthesisdevelopssomegeologicaldisasterpredictionresearchesinclud

2、ingsurroundingrockclassification,collapse，rockburst,largedeformation,waterinrushandburstmud．TheDaXianglingtunnellocatedintheacrossmountainsectionbelongtotheYaluhighway,whichisaexceedlongtunnel．Therearehightopographicdifferenceandhi曲crustalstressinthetunnel．Th

3、egeologicalconditionsofthetunneliscomplicated，SOit’Sverydifficulttomakesurethatthetunnel’Sgeologicalcircumstanceandthecharacters，scopeandspaceofthebadgeologicalconditionsatthestageofinvestigationanddesign，whichbringcertainofdangerousanddifficultforthetunnelco

4、nstruction．Onthebasisofreferencingtheexperiencesofpredecessorsandtheanalysisofdomesticandinternationaltechnologicalmethods，someofgeologicalconditionsfacedintheconstructionprocessofhighwaytunnelandtheapplicationofpredictivemethodsandforecastofgeologicalintunne

5、lhavebeenstudieddetailedlyinthethesis．Finally,amethodofadvancedforecastofgeology,inwhichthegeologicalanalysismethodsWastakenasthecorecombiningwithgeophysicalprospecting,hasbeendefined．Thissystemevaluatetheweightofaffectingfactoraccordingtothemethodoftheinform

6、ationentropy，andcombiningwithaforecastsystemassociatethesupportvectormachine(SVM)identificationmodelwithdynamicrecursiveneuralnetworkCalculatedmodel，andthenformingaintelligencetechnologytosomeextent．Atthelast,thesystemwillbeusedinonetunnelconstructionprocessu

7、ndercomplicatedgeologicalconditionstoverifythesystem’Sreliabilityandpracticality．Resultsshowthatthepredictionaccuracyishigher,thesystemCansatisfythepracticalengineeringrequirements．Inthenextfuturework,theresultsofthestudywilldirectlyappliedintheconstructionpr

8、ocessofDaXianglingtunnel，andprovideexperiencetoanytunnelhavethesimilarengineeringgeologicalconditions．Theresearchresultsenrichthetunnelgeologicalpredictionofthecontent,enhanceaccuracyandr