复杂地形高含硫输气管道环境风险事故模拟

2008,28(1)78~82ChinaEnvironmentalScience,*,,(,,100875),Lagrangian,H2S.,H2S,,.,,.,H2S,,.X511A10006923(2008)01007805Simulationofenvironmentalriskaccidentofhighsulfur-contentgaspipelineincomplexterrain.WANGXiao,HAOFang-hua*,CHENGHong-guang,OUYANGWei(StateKeyLaboratoryofWaterEnvironmentSimulation,SchoolofEnvironment,BeijingNormalUniversity,Beijing100875,China).ChinaEnvironmentalScience,2008,28(1)78~82AbstractUsinghighsulfurcontentpipelineofSichuanPuGuanggasfiledasstudiedobjectandadoptinglandfollowingcoordinatethreedimensionsobjectivediagnosiswindfieldandLagrangiansmokemodelontheH2Sdiffusionconditionofruptureaccidentsproducedinthehighsulfurcontentpipelinesofcomplexterrainareawassimulated.TheH2Sdistributiondidnotoccurremainlyinlowwinddirection,andduetotheobstructofmountain’sbody,accumulatedinfrontofmountainorproducedturnover,flowedaround,submittedjumpingtypedistribution.Themountainwaistnearhilltopandlowhollowriversvalleysiterapturepointssimulatingcontrastshowedthatthehighertherapturepoint,thebetterthediffusingconditionofpollutant,thedistributionofrisksensitivepointdecidedpipingruptureenvironmentalrisksize,combiningtheH2Sdiffusionresultandresidentialareadispersinginthestudiedarea,syntheticjudgethatenvironmentalrisklocatedinthehighrapturepointwassmallerthanthelowhollowpoint,thusitwassuggestedtocarryoutlayingofliningbuildofequalhighlineofhigherterrain.Keywordscomplexterrainpipelinehydrogensulfideenvironmentalrisksimulation,(H2S30g/m3)[1],[23]..,,,.,,,[46].H2S,.Lagrangian,H2S,,,.1,,,300~1100m.4,20070327*,,[e-mail]179250/km2.,,.,H2S229.9g/m3(15.16%).99km,0.495km/m2,.,2H2S,1.98t.,,2.,2,.22.18.4MPa,500mm,40,.[7]162.87kg/s.2H2S1min,.H2SH2S.,618mg/m3,0.5h;152mg/m3,,0.5~1.0h;15.2mg/m3,8h;0.01mg/m3[89].,,.,:(0.5m/s)(F)H2S.20057~1220061~4,.,NE(22.8%)E(16.5%)W(12.8%)SW(19%).0.9%~5.0%,.,,.,8H2S.2:1,342m;2,638m.H2S(618mg/m3)30~60min,30min.,30min,30min,30min.30min,().2.22.2.120km×20km,81×81,[10]..[11][12],400m,F0.38.1:50000.,,().2.2.2,,[313].2,,.Lagrangian[14],,3.,Lagrangian,,.,Lagrangian8028,.C(x,y,z).,,(x,y,z)(mg/m3):()()()()()()()322c2222cc2222cinvc22,,exp22πexpexp222expexp22xyxyzxyzzzxxQCxyzyyzzzzzzzσσσσσσσ⎡⎤−=⋅−⋅⎢⎥⎢⎥⎣⎦⎧⎡⎤⎡⎤−−⎪−⋅−+⎢⎥⎢⎥⎨⎢⎥⎢⎥⎪⎣⎦⎣⎦⎩⎫⎡⎤⎡⎤+−−⎪−+−⎢⎥⎢⎥⎬⎢⎥⎢⎥⎪⎣⎦⎣⎦⎭:Q,mg;xc,yc,zc,m;zinv,m;σxy,σz.σxy(x)=axb,σz(z)=cxd,,PG[15].2,:zinv(134.7m)a(0.1407)b(0.8409)c(0.3498)d(0.6415)(xc,yc)(1m)(60s);:H2S(1.98×109mg)(1)(618,152,15.2,0.01).,,5.1,,14[16].33.1H2S1,1,.H2S,1E,WSWS;,SW.,,.1,1152mg/m3.12201816141210864202468101214161820201816141210864202468101214161820(km)(km)(km)11,2H2SFig.1SuperpositionofH2Sandresidentsdistributionofreputedpoint1andpoint261815215.20.01mg/m31737.13mg/m3,1562m;2681.74mg/m3,1392m,18121.1NESESW2SESW,,H2S.,12500.92,316.13mg/m3.2H2S1,,.12H2S30minTable1H2S30minaveragemaximumconcentrationofreputedpoint1andpoint2with8winddirections(m)(m)(mg/m3)(min)1N(3310,321)3325425.07145NE(346,173)3871144.2920E(840,3285)3391467.35130SE(148,1062)10721150.4080S(1136,321)1181609.25130SW(346,173)4311097.795W(148,420)445628.905NW(2075,914)2267374.0265N(247,247)349231.945NE(247,0)247444.555E(0,247)247224.6852SE(247,247)2471741.6750S(247,0)349387.165SW(741,247)7811815.4985W(1235,2964)3211361.8990NW(1729,5434)5702246.54852,10.43,2.45km2,20.25,1.52km2,;1(12.33,25.80km2)2(13.78,49.48km2).,21.H2S,1,,.,.230min(km2)Table2Statisticof30minstandingconcentrationthresholdarea(km2)10.432.4512.2325.8020.251.5213.7849.483.2H2S,,250/km2,,,,,.,.112,1:50000.1,H2S,,144,439;296,167.,12.3.3.3.,.H2S(618mg/m3),(152mg/m3C30aver-max618mg/m3).2,,.,,,8228“”,,.44.1LagrangianH2S.,H2S,H2S,.4.2,12,2,,,.()H2S,,12.[1],,.[J].,2005,15(5):8487.[2]ShrivastavaOP,SarafRK,GhoshAK,etal.ReliabilityanalysisofpipelinescarryingH2Sforriskbasedinspectionofheavywaterplants[J].ReliabilityEngineeringandSystemSafety,2006,91(2):163170.[3],,,.[J].,2004,24(12):122126.[4],,.[J].,2006,6(5):9195.[5]DziubińskiM,FrątczakM,MarkowskiAS.Aspectsofriskanalysisassociatedwithmajorfailuresoffuelpipelines[J].JournalofLossPreventionintheProcessIndustries,2006,9(5):399408.[6]YangZhao,LiXihong,LaiJianbo.Analysisonthediffusionhazardsofdynamicleakageofgaspipeline[J].ReliabilityEngineeringandSystemSafety,2007,92(1):4753.[7]HJ/T1692004,[S].[8]SY/T50872005,[S].[9]TJ3679,[S].[10],,,.[J].,1994,14(1):2531.[11],,.[J].,2000,20(3):714.[12]MonikaK,MarcB,BrunoS,etal.Dataassimilationforshort-rangedispersionofradionuclides:Anapplicationtowindtunneldata.AtmosphericEnvironment,2006,40(38):72677279.[13],.[J].,2006,26(7):120122.[14]RazaSS,AvilaR,CervantesJ.A3-DLagrangianstochasticmodelforthemeso-scaleatmosphericdispersionapplications[J].NuclearEngineeringandDesign,2001,208:1528.[15],.[M].2.:,2002:9299.[16],,,.[J].,2003,23(1):612.(1982),,,,.2..1129.70.,,.,,,,,,.2007124183