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1Technicalcurrentsituationanddevelopmentofthedynamiccompactionmachinery122.12342.25638722StepinXiangjiabahydropowerstationXiangjiabaplanningtoinstalledcapacityis6400MW,averageannualenergyoutputupto30.747billionkWh,couldirrigated250000hm2.Xiangjiabaconstructionwasbeginin2006andatacrucialperiodnow,constructionequipmentsplayanimportantroleintheproject.WeareconvincedthatgeneratingelectricityinOctober2012andbeupto384mfrontsinJanuary2013willbeachievedfortheconstructors'hardwork.Greetingtothem.28ReviewandoutlookofChinaloaderindustryin2011Intheextraordinarylastyear,Chinaloaderindustrywentoutfromthetwistsandturns.Lookingforwardthe2012,wepredictthatthefirsthalfyearmarketwillstillbeadownmarketandthesecondhalfyeartobebetterwiththemarketease.Therewillbealargechallengetoconstructionmachineryindustryforthedownmarketofloaderindustry.Meanwhile,itprovidesaprecioustimeforupgradingindustryandreadjustingtheproductmix.It'sadevelopmentopportunitytotheindustryfromanotherpointofview.39TechnicalcurrentsituationanddevelopmentofthedynamiccompactionmachineryAsthe12thfive-yearplanstarted,thescaleoftheurbanizationconstructionandengineeringconstructionwillcontinue,therewillbemoreandmorefoundationtreatmentengineeringandtherelatedconstructiontechniquesmoreandmoreadvanced.Dynamiccompactionmethodhasbeappliedwidelyinindustry,civilarchitecture,cutintomountain,foreshorereclamation,mountainbackfilling,wharf,airport,roadandotherinfrastructuresbecauseoftheadaptability,efficiencyandeconomy.Thetechniqueofdynamiccompactionhasarapiddevelopmentandbecomingaspecialmachineryfromthesuccedaneumofcrawlercranegradually.56TheanalysisofmixingtechniqueofdoublehelixconcretemixerBasedonthetheoreticalanalysisandexperimentalresearch,itconcludeareasonablemixingtechnologyandparameterinallusiontoafeedingmethodthefirstmixedwithcementmortarmethodandsandenvelopedwithcementmethod.Theresultsindicatethatthefirstmixedwithcementmortarmethodandsandenvelopedwithcementmethodcanimprovethestrengthanduniformityofconcreteandthefirstmixedwithcementmortarmethodisbetterthancementwrappingsandmethod.Therationalmixingtimeis80s-90s,mixingspeedis1.6m/s-1.8m/s,thefirstqualityofwateris80%-90%.83Transportationandhoistingforgeneratorstatorof600MWthermalpowerunitBasedonexistingmachineryandtoolsaswellasthecharacteristicsofthegeneratorstator,theauthoranalysesthedifficultiesinhoistingtheGeneratorStatorandproposesaloaddistributionschemeandaconstructiontechniquethatcoverstheentireliftingprocess,hoistuntilbeingmounted.03Contents