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岩溶地区深基坑渗漏原因分析及处理措施.docx

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岩溶地区深基坑渗漏原因分析及处理措施 摘要： 随着岩溶地区城市化建设的加速，深基坑的施工日益增多。然而，在岩溶地区的深基坑工程中，渗漏问题经常会出现，给施工和使用带来不便和危害。本文结合岩溶地区的地质特点和水文地质条件，对深基坑渗漏的原因进行分析，并提出了防止深基坑渗漏的相应措施。 关键词：岩溶地区；深基坑；渗漏；水文地质；措施 Abstract: Withtheaccelerationofurbanconstructioninkarstareas,therearemoreandmoredeepfoundationpitsconstruction.However,leakageproblemsoftenoccurintheconstructionofdeepfoundationpitsinkarstareas,whichbringsinconvenienceandharmtoconstructionanduse.Inthispaper,thegeologicalcharacteristicsandhydrogeologicalconditionsofkarstareasarecombinedtoanalyzethecausesofdeepfoundationpitleakageandproposecorrespondingmeasurestopreventdeepfoundationpitleakage. Introduction Deepfoundationpitconstructionisamajorengineeringactivityinurbanconstruction.However,inkarstareas,deepfoundationpitconstructionoftenfacestheproblemofleakage.Leakagenotonlyaffectsthequalityandprogressofengineeringconstruction,butalsoendangersthesafetyofsurroundingbuildingsandpeople'slives.Therefore,itisofgreatsignificancetostudythecausesofdeepfoundationpitleakageandputforwardcorrespondingmeasures. AnalysisoftheCausesofDeepFoundationPitLeakageinKarstAreas Karstareasarecharacterizedbyuniquegeologyandhydrogeology.Thekarstterrainisporousandpermeableduetothedissolutionofsolublerockssuchaslimestone,dolomite,andgypsum,whichmakesiteasyforwatertoflowunderground.Inaddition,karstterrainisalsopronetoformingundergroundrivers,caves,andpotholes,whichfurtherincreasesthedifficultyofconstruction. TheCausesofDeepFoundationPitLeakageinKarstAreasareasfollows: 1.GroundwaterLevel Inkarstareas,thegroundwaterlevelisgenerallyhigh,whichmakesthesoilinthefoundationpitwetandsoft.Ifthefoundationpitexcavationdepthexceedsthegroundwaterlevel,itiseasytocausegroundwatertopourintothefoundationpit,leadingtoleakage. 2.KarstCaves Karstcavesarecommoninkarstareas,andtheyareoftenconnectedwiththesoilandrocklayersaboveandbelow.Ifthefoundationpitpassesthroughthesekarstcavesduringexcavation,itiseasytocausethesoilaroundthekarstcavestocollapse,resultinginthefoundationpitsubsidenceandleakage. 3.SoilComp