埕島海域軟土地基上座底式鉆井平臺(tái)滑移機(jī)制分析.pdf

1、青島海洋大學(xué)碩士學(xué)位論文埕島海域軟土地基上座底式鉆井平臺(tái)滑移機(jī)制分析姓名：陳秀法申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：海洋地質(zhì)指導(dǎo)教師：馮秀麗莊振業(yè)2001.6.1AbstractTheestuaryofYellowRiverhasformedaseriesofmuddysedimentsdeltasbecauseoftheexistofeddycurrentandfrequentswingofYellowRivertailSomefieldofCh

2、engDaooilfieldliesineastareathatsoftsoiliswidespreadandiscoveredoneoveranotherinspaceTheSoftsoilinthisareatakeonaseriesofcharacteristicThestrengthofsoftsoilobtainedbydynamictriaxialtestislowerthanthatobtainedbystatictria

3、xialtestTheunconsolidatedundraineddynamicstrengthofsoftsoilisabout40％asthatofstaticstrengthOntheBaseofachievementofpreviousstudy，differentkindsofenvironmentalloadingwhichproduceforcesactingonstakeandplatformareanalyzed，a

4、nditscorrespondingcomputeequationisgiveninthepaperAnewmethodisobtainedbymodifyingtheMorionequationusingtheliIlearwavetheoryItCanbeusedtocalculatetheforcesactingonthestakewhichisproducedbywaveandoceancurrentAbottomsupport

5、ingdrillingplatform(cB3s)withanti—slidestakeinChengDaooilfieldslideinastormwaveinapril2000ThemethodobtainedabovewasusedtoanalysisthefactorswhichleadtotheslidingItcarlbeconcludedthattheoceancurrentitselfproduceverysmallfo

6、rceonstakeandplatform；andtheiceofseriousiceyearcallaffectthestabilityofplatform，buttheforceisonlyeffectthemseasonalTheplatformdonotslideinnowatersetupwaveemergingonceper50yearsItwouldbefacedwiththedangerousofslidingwhene

7、ncounteringabigstormTheplatformslidesattributetotheforceproducedbywaveandwatersetupItisthefirsttimetoanalysisthestabilityofbottomsupportingdrillingplatformaccordingtothewatersetupandsoftsoildegradationItcanbemorefittedto