巖溶地區(qū)隧道突水機理與結構力學行為研究.pdf

1、西南交通大學碩士學位論文巖溶地區(qū)隧道突水機理與結構力學行為研究姓名：劉記申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：晏啟祥201205西南交通大學碩士研究生學位論文第1I頁AbstractCarbonatedistributesmostwidelyinChina，andcoveringandexposedcarbonateaccountsforaboutonefiRhofterritoryareaAccompanyingtheimp

2、lementationoftheWesternDevelopmentStrategy，tunnelasanimportantpartoftransportinfrastructure，playsanincreasinglyimportantroleHowever’geologicaldisastersoftunnelengineeringstilluniversallyexist，especiallyinpoorgeologicalco

3、nditionsofthekarstdevelopmentareaThegeologicaldisasterscreategreatdifficultiesfortunnelconstruction，andahugelosstOthenationaleconom％TakingahighriskkarsttunnelofnewGuiguanghighspeedrailwayRailwayastheobjectproject，usingor

4、thogonalexperimentanalysis，multiplelinearmeansofregressionandsimulationanalysisofthefinitedifferencemethod，studyonwaterinrushmechanism，against—inrushthicknessandstructuremechanicalbehaviorofkarsttunneliscarriedout，themai

5、nworkandresultsareasfollows：1Theprincipleofthecouplingbetweentheseepagefieldandstressfieldissummarizedandanalyzed，onthebasis，combinedwiththefinitedifferencefluidstructureinteraction，afluidsolidinteractionmechanicsanalysi

6、smodelandboundaryconditionsforkarsttunnelwithhighwaterpressurecavenearbyareputforward2Theminimumagainstinrushthicknessofwaterpressuretunnelisstudied，usingorthogonaldesignforthecaveintheupperpartofthetunnel，theinfluencela

7、wsofminimumagainst—inrushthicknesscorrespondingtochangeofthesurroundingrocklevel，thepressurecoefficient，thecavespan，thedepthofthetunnelandthehydraulicinsidecaveareachievedusingmultipleregressionmethods，mathematicalpredic

8、tionmodelontheminimumagainstinrushthicknessisestablished3Takehighwaterpressurewaterfilledcavelocatedinthetunneltheupperforexample，consideringthetunneldrainage，suchastheholeblockmethodandeplugginglimitdrainage，usingfinite