云桂线珠琳段岩溶地面塌陷的成因机理-研究与防治对策

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1、西南交通大学硕士研究生学位论文第1I页AbstractKarstiSaheavytotherailwayengeering．Suchasthekarstwaterhit，theroofofthelimestonecavecollapseandthelargescaleofsurfacesubsidenceandmore，whichiSasoimportantengeeringgeologeproblemintherailwayconstruction．Becauseoftheengineeringdestructiveandth

2、edifficultytoforesightofthekarstgroundcollapseintheseareasthattherailwaylineisthrough．thehighspeedrailwaywillgetahugelosses．Withthedevelopmentoftheeconomy,inthekarstareathatlinearengeeringjustlikethehigh—speedrailwaycannotavoid，karstproblemwillbemoreobvious．Firstly,a

3、ccordingtotheliveinvestigation，samplingtothekarstoftheresearchareaandthedeepinvestigationtothecollapsedareaandtheanalysisfromeachsideofsoil，rockandgroundwater,wecanknowthegrouthconditionthattheresearchedareahastodependonforits’collapseandhavebeensureofthecollapsechar

4、acteristicoftheresearcharea．ItprovidesUSthebasistoresearchthoroughlytheformationmechanismofthekarstcollapseintheresearcharea．Secondly,accordingtocollectingtheresearchdataoftherailwayinkarstareaandhighwayengeering，wehavegottenafurtherknowledgeoftheformationmechanismof

5、thekarstcollapse．AndcombinethelithologicfeaturesofthekarstgroundsubsidenceinresearchareaandthehydrogeologicalfeaturesaswellastheweatherconditionsitiSin．WeCaneasilyanalysetheformationmechanismofthekarstcollapseintheresearchareaandthekarstcollapsemode．AccordingtotheYun

6、guirailwayalongtherouteandthegrouthfeatureofthesoilholeinundergroundandcombinethesoilpropertiesintheresearcharea．Usethemethodofnmnericalsimulationtohavethesoilcavecollapsesimulationanalysis．Finally,passagehasdiscussedtheengineeringprotectingcountermeasuresweshouldtak

7、etodealwiththekarstgroundcollapsewithdifferentfeatures，whichprovidesUSrecommendedpracticeofkarstdesignandconstruction．Keywords：KarstcollapseFormationmechanisNumericalsimulationPrevention西南交通大学硕士研究生学位论文第1II页目录第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．1研究背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2岩溶塌陷研究概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21．2．1国内研究概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．21．2．2国外研究概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．41．