雨水入滲條件下膨脹土邊坡穩(wěn)定性分析.pdf

1、同濟(jì)大學(xué)土木工程學(xué)院碩士學(xué)位論文雨水入滲條件下膨脹土邊坡穩(wěn)定性分析姓名：張世芳申請學(xué)位級(jí)別：碩士專業(yè)：地質(zhì)工程指導(dǎo)教師：葉為民20090301ABSTRACTInrecentyears，thedamagethatrainfall—inducedslopinstability(especiallyexpansivesoilslop)bringstoconstructionandmanagementofhighwayisemergingTh

2、erefore，consideredtherainfallexpensivesoil，transientseepageduetoraininfiltrationiscomputedusingthesaturated—unsaturatedseepagetheotyThecomputedtransientporewaterpressuresarethenusedforsubsequentslopstabilityanalysisconsi

3、deredmatrixsuctionReaultsofthisresearchareofgreatsignigicancebothintheoryandapplicationtoengineeringAnexpansivesoilslopeexampleinLaohekouareaofHanshiexpresswayinHubeiprovinceisusedtostudyslopstabilityanalysisbycombiningl

4、aboratorytests，theoryanalysisandnumericalanalysisonthebasisofunsaturatedsoilmechanicsandreliabilityanalysismethodAndthefollowingconclusionsareobtained，Thecharacteristicsoftheswellandunsaturatedsoilmechanicsofexpansivesoi

5、lisstudiedbylaboratorytests，andthephysicalpropertiesofthetestsoilareobtainedOnthebasisofunsaturatedseepagetheory，thesaturatedunsaturatedseepagelawofexpansivesoilslopisstudiedusingnumericalsimulationmethodThecharacteristi

6、csofsoilinfiltrationandstrengthareinfluencedbyweatheredfissuresintheshallowlayeroftheexpansivesoilareaWhenrainfallintensityishigherthanthesoilinfiltration，thedistributionofsoilwaterandsafetyfactoroftheslopareaffectedmost

7、ThewatercontentandthedepthofpenertrationwillincreasewithincrementofrainfalldurationTheporewaterpressureandwatercontentofthediffirentlocationsinexpensivesoilslopewillberedistributedafterrainfallinfiltrationAndwaterwillcol

8、lectatthetoeoftheslopeasily，withacorrespondingreductioninshearstrengthandslopinstabilitySo，onthebasisofunsaturatedsoilslopestabilityanalysisconsideredfissuresintheshallowlayerofexpansivesoil，conclusionsshowthatthereliabi