巧切西瓜(三年级)

:025322468(2003)0520694205:X705,TU411,TU413:A,(,310027):(MSW),(),.MSW,MSW...,011Pa,.:;;;;CompressioncharacteristicsofMSWandanalysisofcapacityforlandfillsCHENYunmin,KEHan(InstituteofGeotechnicalEngineeringZhejiangUniversity,Hangzhou310027)Abstract:MicrobialdecompositionrulesofMSWaregeneralizedandanequationtoevaluatethevariationoforganicsubstancewithtimeordepthisproposedinthisthesis.Theequationisverifiedwhencomparedwiththeresultsfromfield2test.Large2dimensioncompressiontestsareperformedinlaboratoryandvoidratio2depthcurveareobtainedbymeansofin2situsampling.Bycomparisonofin2situtestsresultsandlabora2toryresults,anequationtoestimatethecapacityforlandfillsispresented.Theproposedmethodsaresimpleandparametersaretendedtobedetermined.Theeffectsoforganiccontentanddecompositionrateonthesettlementandcapacityoflandfillsarequantitativelyanalyzed.Throughcalculations,itsfoundthatthesettlementoflandfillsisinfluencedbyorganicbiodegration;especiallywhendecompositionratein2creasesuptothe011Pyearlevel,decompositionwillcontributemuchtothecapacityoflandfills.Keywords:municipalsolidwaste(MSW);landfill;settlement;bio2decomposition,analysisofcapacity:2002208205;:2002209209:(50278087):(1962),,,.,.,,,MSW,,[1].,CodutoHuitric(1990)MSW18%24%..1MSW,(),.,25%60%[2].,.Golueke56%()[3].,23520039ACTASCIENTIAECIRCUMSTANTIAEVol.23,No.5Sep.,2003转载[4],[5]:Mc(t)=Mc(0)e-kt(1):Mc(t)t(kg);Mc(0)(kg);t(a);k.1(B0=35%,k=01365Pa,v=5mPa,=0156)Fig.1VariationofthetotalvolatilesolidscontentwithDepth(B0=35%,k=01365Pa,v=5mPa,=0156),,pH,FarquharRovers01365Pa[6],Chen01012Pa01788Pa[5].1.,,.MSWB0,B1,B1=B0,1.MSWt,B(t)tz:B(t)=(B0-B1)+B1e-kt1-B1(1-e-kt)=(1-+e-kzv)B01-B0(1-e-kzv)(2)v(mPa).,1.v5mPa,=0156(Golueke,1992),B0=35%,k01365Pa([6]),(2),(2).2MSW211MSWMSW,MSW.,(8t),,34cm,19cm,112cm.MSW,2cm.,4cm..1.1(%)Table1Composition,content(%)andspecificgravityofMSWusedinlaboratorytests1,kg0.8550.210.3350.030.382.8450.0250.060.0150.020.2255.01,%17.14.26.70.67.656.90.51.20.30.44.51002,kg1.8320.6390.2310.080.1153.000.1210.3080.110.030.3276.7932,%26.979.413.401.181.6944.161.784.541.620.444.81100,gPcm32.01.21.40.91.22.42.54.02.31.01.15965:中国科技论文在线(3),,Cc1171,Cce01354.212MSWMSW,101mm,200mm.,,,.42MSW.,,,,45.,(),,.,,.4MSWFig.4Variationofvoidratiowithdepth5MSWFig.5ComparisonoflaboratorycompressioncurveofMSWwithIn2situresults33.1,,:(1),,;(2);(3)69623中国科技论文在线(4).6.6a(),V0(mPa),e0B1.6b,,,MSW,,,.MSWds;ze(z),t,Z.wdsV0t1+e0,Z0wds1+e(z)dz,t0wdsV0B1(1-e-kt)1+e0dt.,:wdsV0t1+e0=Z0wds1+e(z)dz+t0wdsV0B1(1-e-kt)1+e0dt(3)S=V0t-Z,S,.5:V01+e0(1-B1)S+ZV0+B1k(1-e-k(S+Z)V0)=Z011+e(z)dz(4)(4),V0e0B1k4ze(z).V0(),;B1=B0(=0156,Golueke,1992)B0,e0;kMSW,,.e(z)2,,,;,,6c,6be(z)P(z)(),e2p.40,,k,k0.,,10mPa(),017kNPm3,212;40%,MSW510(1m7965:中国科技论文在线),ze(z),:e(z)=3.8-0.7log(z)1z10(5a)e(z)=3.1-1.8log(z)z10(5b)7Fig.7Relationshipbetweenlandfilingtimeandlandfilingheight7,0Pa()010365Pa()01365Pa(),,.:50m,36195a7115a8122a;,113911431164.917kNPm31010kNPm31115kNPm3.100m,31614a1715a2014a;,116411752104.1115kNPm31213kNPm31413kNPm3.5,,.,:(1)(2),;(2);(3)MSW,MSW,,;(4),;011Pa,.:[1]WallDK,ZeissC.Municipallandfillbiodegradationandsettlement[J].JEnvirEngrgASCE,121(5):457487[2],,.[J].,2000,22(1):3539[3]GoluekeC.Composting:Astudyoftheprocessanditsprincipals[M].RodaiePress,Emmaus,Pa,1972[4]HalvadakisC,etal.LandfillMethanogenesis[Z].TechnicalReportNo.271.Dept.ofCivilEngineering.StanfordUniversity,PaloAl2to,Calif,1983[5]ChenWH.Time2settlementbehaviorofmilledrefuse[D].Dissertation,DepartmentofCivilEngineering,NorthwesternUniversity,Evanston,,1974[6]FarquharGJ,RoversFA.Gasproductionduringrefusedecomposition[J].Water,Air,andSoilPollution,1973,2:48339589623中国科技论文在线