岩土热物性测试方法和软件开发

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1、山东建筑大学硕士学位论文一J，一^0-I●f乙．’山东建筑大学硕士学位论文GroundThermalPropertiesMeasurementMethodandSoftwareDevelopmentYuXiaofei(ThermalEngineering)DirectedbyYuMingzhiABSTRACTAmethodisproposedtodeterminedeepgroundthermalpropertiesatworksitesusingone-dimensionalsolidcylindricalheatsourc

2、emodeltogetherwithparameterestimationmethod．ThesolidcylindricalheatsourcemodelconsiderstheinnerboreholeofaverticalburiedloopofGroundHeatExchanger(GHE)asasolidandheatfluxisimposedontheboreholewall，SOitismoreapproximatethanthehollowcylindricalheatsourcemodelwhichassum

3、estheinnerboreholehasnomass，andalsomoreapproximatethanthelinesourcemodel～vhichregardstheburiedUtubeasalineheatsourcewithadiameterofZerO．Andananalysissoftwareisdevelopedusingthismethodtoanalyzethefieldtestdata．Thesoftwareincludestwoparts：friendlyhuman·machineinterfac

4、eandcomputationprogram，whichrespectivelyarewrittenbyVisualBasicandVisualC++．Thesoftwaretakesintoaccountallaspectsoftheanalysisoffieldtestdata，includingparametersetting、datareading、calculationresultsandcurveshows．Sothat"USerScaneasilycarryoutthedataanalysisoperationa

5、ndobtainthegroundthermalprolSerties．Thispaperhasusedthesolidcylindricalheatsourcemodel，togetherwiththeparameterestimationmethod，tomeasureandanalyzethegroundthermalpropertiesofsomeactualprojectsinsitu，andtheresultsshowthatthismethodcangetcrediblegroundthermalproperti

6、es，whichcanbeusedforengineeringdesign．Thelinesourcemodel、hollowcylindricalheatsourcemodelandsolidcylindricalheatsourcemodelhaverespectivelyusedtoanalyzetheimpactofmeasuringtimeonthegroundthermalconductivity．Theresultsshowthatwhenthetestresultsachievesstable，themeasu

7、ringtimewithsolidcylindricalheatsourcemodelisshorterthanthatwiththeothertwomodels．Inaddition，in—situgroundthermalpropertiesmeasurementtimeofabout48hoursisrelativelyshorttoobtainstablegroundthermalproperties．Thetesttimeshouldbeextendinordertoobtainmoreaccurateandreli

8、abieresults．山东建筑大学硕士学位论文Keywords：geothermalheatexchanger,groundthermalproperty,solidcylindricalheatsourcemodel，measurement，softwarewithhum