杭州天子岭垃圾填埋体土工性状试验研究

31,2231(1)(2)(3):,,:;;;;:TU41,X705:A:10002131X(2004)102005227ANEXPERIMENTSTUDYONTHEGEOTECHNICALBEHAVIOROFTHETIANZILINGSOLIDWASTELANDFILLOFHANGZHOUZhuXiangrong1,2XieXinyu2WangZhaohui3FangPengfei1(1NingboInstituteofTechnology,ZhejiangUniversity)(2InstituteofGeotechnicalEngineering,ZhejiangUniversity)(3ShenzhonYitianRealEstateCompany,Shenzhen)Abstract:TheTianzilingwastelandfillisavalley2typelandfill,builttotreatthemunicipalsolidwastesfromHangzhoucity.Thegeotechnicalpropertiesofthemunicipalsolidwastesareimportantforthedesignandmaintenanceofthelandfill.Inthispaper,someengineeringpropertiesofthemunicipalsolidwastes,suchasunitweight,watercontent,specificgravity,liquidlimit,plasticlimit,hydraulicconductivity,compressibility,andshearstrength,arestudiedbylaboratoryandin2situtests.Keywords:municipalsolidwaste;landfill;engineeringproperties;laboratorytest;in2situtest:2001208221,:20042042223:(9617)(96212012)120,,,,,[1],,,,,,,,,;19914,13+5015m,1215m+10215m,+7715m+90m+10215m3,(+65m)37m,13710Vol137No110200410CHINACIVILENGINEERINGJOURNALOct120041Fig11CrosssectionofTianzilingsolidwastelandfill2211+10215m+90m1Table1Componentanalysisofmunicipalsolidwaste(m)(%)(%)(%)(%)()pH5311119711503081710151215567154081616152417101871557408152015613317754081525516811684183881452315111831960183891020171318619581638817181516131112711651439814201819718516671739814516152525615427181021142553164481315135128118428182017152113113604481724121817166915468135202313313531345816101114114711804581715151012155721581420151717112196413814251316111841570814,,,,,;1,161890m,131510215m,,;,,,,,,,pH7,,212+10215m+90m+7715m31,22,,,0181168gPcm3,0181135gPcm32,2,,,,,;2Fig12Densitydistributionofmunicipalsolidwaste213303,3,20%60%,30%,10016%8315%,,,,,,,10,100,3537102[2]Table2Summaryofunitweightandhydraulicconductivityformunicipalsolidwaste[2](gPcm3)(cmPs)Fungarolietal(1979)111411110-3210-2Oweisetal(1986)614()10-3Landvaetal(1990)101414110-3410-2Oweisetal(1990)613141111510-4(1994)91210-411110-381618210-4410-33Fig13Statisticsofwatercontent[3],,,10-7cmPs,,,214,[4],,015cm,3,,,11962162,4(21642175),,20m,212215,,4Fig14Specificweightdistributionofmunicipalsolidwaste,015cm(),,,50%130%;,13%35%,5,,,;,,5Fig15Distributionofliquidlimitandplasticlimit216[1],452004,015cm,,210-4410-3cmPs,2,,10-7cmPs,217+90m17,686+90me2pFig16e2pcurveofsamplein+90mplatform7+90me2lgpFig17e2lgpcurveofsamplein+90mplatform6,,;,,0137,,1107,,e2lgp,,,8Fig18DistributionofcoefficientofconsolidationCasagrande10m20m25m3215kPa47kPa225kPa,98kPa220kPa281kPa,:,,,;,e2p01482125MPa-1,,,1123414MPa,2127MPa01260156,,01160175e2lgp214510-3617210-3cm2Ps,316910-3cm2Ps,8,21811Mohr2Coulomb9,6143114kPa,4014491621UU,,,UU12UU,10;,5537109Fig19Shearstrengthenvelopofthesoeidwaste10UUFig110Stress2strainrelationshipofUUtestUU,-,5%,3UUCu=01012kPa,u=1015193UUTable3StrengthparametersofUUtestCu(kPa)u()Cu(kPa)u()1813771512132101212881417351318991247141710010155114161107156018126181931CU,,CU11+90m4CU,7m10m15m20m,2315415515,5818kPa-127m,,3,,,11CUFig111Stress2strainrelationshipofCUtest12CUFig112Stress2strainrelationshipsofCUtestswithdifferentdepths3(15m)CU,+7715m+90m10215m,753(5818kPa),3,5,13(),;;,Mohr2Coulomb465200413CUFig113Stress2strainrelationshipsofCUtestswithdifferentburyingtimes4CUTable4EffectiveandtotalstrengthparametersofCUtestC(kPa)()Cu(kPa)u()1331838170251214113361961221101561336191610193415121821101761741144162915186162531521101951932110211021311361921624123311,+10215m+90m1,+7715m2,J1J2J3J4,,41718m18m22m2213m,qcfs,,qcfs,5Ps,6Ps,[5]312+10215m+90m+7715m32Z1Z2Z3Z4Z5Z61712m4515m,,,29,13Z1Z4Z5Z6,,,,,,5Table5Resultsofstaticconepenetrationtest(m)qc(MPa)fs(kPa)541045J110212531521768521657J21021055155125112331021565J315312204155117351021680J41521370202186PsTable6RelationshipbetweenPsandtheshearstrengthofthesolidwaste(m)Ps(MPa)(kPa)54132312UUJ1102153313UU8914CU1531113414CU51142011UUJ2102193612UU1531872163CU53104513CU71186019CUJ3102141913UU156112015UU511920113UUJ41031136123UU1521757216CU:,311UUCU,7UUCU218,,Es7537107Table7Relationshipbetweenstandardpenetrationnumberandstressstrength3(kPa)33(kPa)176114101341431015496111241181013456151148014103331310389149329109375129219137460198318117345137413153UU33CU8EsNTable8RelationshipbetweenNandEsEs(MPa)1544110+90m103218083212074116073115813511841261186+10215m12311739311234(1),,(2)50%100%,020%,020%,,(3)0181168gPcm3;30%;11922162,;50%130%,13%35%;210-4410-3cmPs(4),01482125MPa-1,1123414MPa,214510-3617210-3cm2Ps(5),,UU:0101012kPa,10151910CU:1131610kPa,25104114;CU:0101218kPa,21102915(6)Ps,[1],.(MSW).,1998,20(5):16[2]SharmaHD,DukesMT,OlsenDM.Fieldmeasurementsofdynamicmoduliandpoissonsratioofrefuseandunderlyingsoilsatalandfillsite.In:LandvaA,KnowlesGD,eds.GeotechnicsofWasteFills2TheoryandPractice.Philadelphia:ASTMSTP1070,1990.5770[3]MitchellRA,MitchellJK.Stabilityevaluationofwasteland2fills.In:ProceedingsofASCESpecialtyConferenceonStabilityandPerformanceofSlopeandEmbankments2II.BerkeleyCA:[s.n.],1992.11521187[4](SD128-84).:,1987[5].[].:,1999,,1,,100:310027,,,,,,,852004