基坑降水引起的地面沉降分析.pdf

1、中南大學(xué)碩士學(xué)位論文基坑降水引起的地面沉降分析姓名：李志平申請學(xué)位級別：碩士專業(yè)：地質(zhì)工程（巖土工程）指導(dǎo)教師：彭振斌20080501ABSTRACTWiththerapiddevelopmentofNationalEconomyandUrbanConstructiveofourcountry，usagesofhighaltitudeandundergroundspaceareincreasedsignificantlyMostofde

2、epexcavationhasrelationshipswiththedewatefingTheinfluenceofdewateringonthesettlementofgroundsurfacesurroundingapitisoneofthekeyproblemsinexcavationsHoweverthereiSnoareasonableandreliableevaluatingmethodSOfarThetechniqueo

3、fdewateringandtheanalysisofsettlementofgroundsurfaceinducedbydewateringinfoundationpitisfirstlydiscussedindetail，andtheresearchfocusofthesettlementofgroundsurfaceinducedbydewateringinfoundationpitiSalsosummarizedSecond，i

4、tintroducesthebadlyaffectofthegroundwaterinfoundationpitAndthemethodaswellastheapplicableconditionsofdewateringinfoundationpit、thefunctionofdewateringinfoundationpit、anditseffectonthesurroundingenvironmentWassummarizedAn

5、dthen，itanalyzesthedeformationmechanismofthesoilunderthedewateringandtheinfluencingfactorsoftheearth’SsettlementItconcludesexistingfundamentaltheoryofsettlementofgroundsurfaceinducedbydewateringinfoundationpitBymathemati

6、calanalysis，agroundwatermovementequationconsideringwaterexpansion，aquifercompressibilityandsolidgrainmovementduetogroundwaterpressuredeclineiSestablishedThenitanalyzestheeffectivestressunderthedewateringatthebaseoftotals

7、tressischangelessandchangeableForthecalculationoflandsubsidencecausedbypitdewatering，nlispaperatthebaseofsummarizesthecalculationoflandsubsidencecausedbypitdewateringalwaysbeusedinengineering，itanalyzestheproblemofthecal

8、culationoflandsubsidencebasedonelastictheoryThenitimprovesthismethods，andthetwomethodsisappliedtopracticefoundationpitandobservedvalueinoneexamplefoundationpit，andareingoodagreementwiththeobservedresultsMeanwhile，enginee