復(fù)雜巨厚第四紀(jì)松散沉積層深基坑降水三維非穩(wěn)定流數(shù)值模擬

1、河海大學(xué)碩士學(xué)位論文復(fù)雜巨厚第四紀(jì)松散沉積層深基坑降水三維非穩(wěn)定流數(shù)值模擬姓名：武永霞申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：地質(zhì)工程指導(dǎo)教師：駱祖江20060601Abstract111icka11dincompactquatcImarysediInentsiIlYang暾RiverdeltacreateacofnplexaqllifersystcmBecause也ehorizontalnowb刪eramundthedeepfoundationpit

2、isd湎clllttopenetmtei“comcbo訛moftheaquifer，deepfbluldationpitdewateringllsuallyusespaniallypcne仃atingⅥ忙llsandthisresultsinverycomplexchangesingr01mdwaterseepage謝Ⅱlobviouscharac衄isticof山ree—dimensionalnowAna】ysismetlloda11

3、dtwo—dimensionalmodelhavenotcontemedsimlllationandpredictiondemondofdeepfounda廿onpitanymoreAimingatdeepfoundationpitdewateringincomplicatedq硼temaryloosesedimentswitll目eattllickrless，血ree—dimensionaln眥e“calsimuIationmeori

4、esofde印foundationpitdewateringhasbeendiscussed柚dadeepresearchhasbeendonebyusingfIniteeIementmetIlod‘RemoVemwaIldcolumn’and‘putabign砌ber’havebeenusedforthefirstbolllldary；acominuousRegionalIdent訊cationFunctionisusedontheb

5、asisofnon—vaTiantnodalvirtualnuxmethodfbrthefeesurfhcebollndary；GaussfbnIluIaisusedtomakettlecurvedsllrfaceintegmlofthe舭esu怕cebouIldary仃ansfbHnedasthedi恐rencebe柳eenVoIumnintegral肌dothercuⅣedsurfaceimegraltocalculatethein

6、te黟alitemonboundaries，whichavoid訪gfindingtheposmonoffkesurf她e，w11ilethecontinuousRegionalIdentificationFunctionisappliedtocalculatev01umninte目alandsⅢfaceinte伊al；Crouta11dPCGmethodisusedfbrsolusionThenthree—dimensionaltra

7、nsientcon矗nedanduncon丘nedseepageanalysisprocedureisdevelopedneprocedureis印pliedin鉚oprojects：(1)shan曲aiHuanqiufin姐cecentertowerfoIlndationpitdewatering，thecomplicatednowstateof伊。吼dwaterissiIlllllatedundertheseconditionswh

8、ichⅡleaquifersdepositeIayerbylayer，t11ebottomoftbeaqllifcrsgoesdeepto149m，mehorizontalnowba塒ergoesde印to34m，theex訂actionwellsarepene廿atedto55m，Ⅱlefiltersoftheextmctionwellsarelocaledbet、veen34mto55m，andmewaterleVelinthede

9、epfbundationpitisdecreasedto26munderlandsllrface，theresuhof8pumpingwellsoptimizationprojectisdesigned(2)ThefonhsubwayofDongJiadutuIlllelr印airfo硼dationpitdewateringinShanghai，thecomplicatednowStateofgroundwaterissimuIated

10、undertheseconditionswhichtheaquifersdeposite1ayerbylayer，thebottomoftheaquifersgoesdeepto14445m，t11ehorizontalnowbarriergoesde印to65m，theexmlctionwellsarepene訂afedto60m，mefinersoftheextractionwellsareIocatedbetween45mto60