国道317线新建矮拉山越岭隧道综合勘探技术应用-研究

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1、万方数据西南交通大学硕士研究生学位论文第1

2、页AbstractTheoriginalAilawindingmountainroadofNO．317nationalhighwayis22km．Theaverageelevationalongtheroadis4300mormore．Avalanches，landslidesandothernaturaldisastersalongtheroadareserious．AsthelogisticsbetweenTibetandSichuanincreasesyearbyyear,thecondition

3、ofAilamountainroadbecomesworseandworse．TheAilamounminroadhasbeenunabletomeetthedemandofnormaltraffic，andhasbecomeoneofthebottlenecksrestrictingthedevelopmentofregionaleconomyofQamdoDistrict．SoanewAilaMountainTunnelisproposedtobebuiltThetunnelsiteislocatedatthejunctionofAriaTo

4、wnshipandTongpuTownshipinGangtuoTownofJiangdaCounty,whichisseverelycoldandhypoxia．Therearepoorterrainconditions，nopermanentresidentsandlackofsupplies．ConsideringtheexplorationonAilaMountainTunnelsiteandtheapplicationofdeepgeophysicalexplorationinrecentyears，acomprehensiveexpl

5、orationmethodthatdeepgeophysicalprospectingisusedinlargeareaandfixed—pointdrillingisusedinkeypartsisproposedinthisthesis．OnthebasisofinvestigationontheengineeringgeologicbackgroundofAilaMountainTunnelsite，sixkindsofexplorationmethodswereresearched．Thesixkindsofmethodsweredril

6、ling，seismicwavemethod，MTmethod，CSAMTmethod，EH4methodandhighdensityelectricalmethod．Theapplicableconditionsandthecharacteristicsofthesixkindsofmethods，suchasbasicprinciple，accuracy,explorationdepth，economy,wereanalyzedinthisthesis．Theapplicationofthesixkindsofmethodsindeeptun

7、nelexplorationwasalsoinvestigated．TheexplorationmethodsofAilaMountainTunnelwerechosenbycomparison．EH4method，adeepexplorationtechnology,wasusedinlargeareaalongtheverticalaxisdirectionofthetunnel．TheresultsofEH4couldbeverifiedbyhighdensityresistivitymethodanddrillingwhichwereus

8、edinimportantpositionssuchastheimportandexportoftunnel．Somerequiredparametersforin-situstresslevelanalysis，classificationofsurroundingrockandseismicdesignwereprovidedbythein—situstressmeasurement，acousticloggingandwavevelocitytest．FieldtestswerecarriedoutinAilaMountainTunnels

9、iteinordertoverifythe万方数据西南交通大学硕士研究生学位论文第1Il页effectivenessofthechose