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TU458A10004548(2006)11201005(1977)Experimentalstudyonlongitudinalwavecharacteristicsoftuff,graniteandbrecciaafterhightemperatureYANZhi-guo,ZHUHe-hua,DENGTao,ZENGLing-jun,YAOJian,QIANGJian(DepartmentofGeotechnicalEngineering,TongjiUniversity,Shanghai200092,China)Abstract:Experimentalstudywasperformedonthelongitudinalwavecharacteristicsoftuff,graniteandbrecciaunderdifferenthightemperatures.Thelongitudinalwavevelocity,density,Young’smodulusandpeakstressofrockswereanalyzed.Furthermore,relationshipbetweenlongitudinalwavevelocityanddensity,Young’smodulusandpeakstresswerestudied.Itwasshownthatthevelocityoflongitudinalwave,density,Yong’smodulusandpeakstressdecreaseswithtemperature.Thelongitudinalwavevelocitydecreasedmorethandensity.However,therelationshipamonglongitudinalwavevelocity,Young’smodulusandpeakstresspresenteddifferentvariationaccordingtothetypeofrock.Keywords:rock;hightemperature;longitudinalwavevelocity;density;Young’smodulus;peakstress[1-6][7-13]50mm100mm0.05mm0.02mm3SX30/13Q-YCKSY-16C11.201113001060/minU-sonicNYL-2000D30/min4h202004006008001Fig.1VTTcurves4004008005385m/s2860m/s47%2008004768m/s1066m/s78%6006008005359m/s3529m/s35%[12-13]2Fig.2ComparisonofρT/ρ0Tcurves20020038004.5%2.9%6.1%20122006Fig.3ComparisonofρT/ρ0Tcurves4Fig.4ρT/ρ0VT/V0curves8000.931.017%0.221.078%78%48%35%[12]2dp(1)(12)1Evµµρµ+−=−(1)ρpvµdEcE580073%60%98%Fig.5ComparisonofEd/Ed0Tcurves2002004006180073%65%35%60%51%98%78y=xy=x1y=x11.2013Fig.6ComparisonofthedynamicandstaticYoung’smodulusFig.7Ed/Ed0VT/V0curvesoftuffFig.8Ec/Ec0VT/V0curves960029%19%Fig.9Comparisonofσp/σp0Tcurve101y=xFig.10σp/σp0VT/V0curves(1)(2)(3)(4)20142006(5)[1].[J].,1995,10(4):131.(WANGSZ.High-temperaturehigh-pressurerockmechanics:history,state-of-artandprospect[J].ProgressinGeophysics,1995,10(4):131.)[2],.[J].,2000,22(3):332335.(XUXC,LIUQS.Apreliminarystudyonbasicmechanicalpropertiesforgraniteathightemperature[J].ChineseJournalofGeotechnicalEngineering,2000,22(3):332335.)[3]ARAÚJORGS,SOUSAJLAO,BLOCHM.Experimentalinvestigationontheinfluenceoftemperatureonthemechanicalpropertiesofreservoirrocks[J].InternationalJournalofRockMechanicsandMiningSciences,1997,34(3):459.[4]ZHANGZX,YUJ,KOUSQ,LINDQVISTPA.Effectsofhightemperaturesondynamicrockfracture[J].InternationalJournalofRockMechanicsandMiningSciences,2001,38(2):211225.[5]DUCLOSR,PAQUETJ.High-temperaturebehaviourofbasaltroleoftemperatureandstrainrateoncompressivestrengthandK1Ctoughnessofpartiallyglassybasaltsatatmosphericpressure[J].InternationalJournalofRockMechanicsandMiningSciences&GeomechanicsAbstracts,1991,28:7176.[6],,.240[J].,2004,23(14):23652369.(LIANGWG,ZHAOYS,XUSG.Testingstudyonphysicalandmechanicalpropertiesofheatedsaltrockwithin240[J].ChineseJournalofRockMechanicsandEngineering,2004,23(14):23652369.)[7]INADAY,KINOSHITAN,EBISAWAA,GOMIS.Strengthanddeformationcharacteristicsofrocksafterundergoingthermalhysteresisofhighandlowtemperatures[J].InternationalJournalofRockMechanicsandMiningSciences&GeomechanicsAbstracts,1997,34(3):668.[8],.[J].,2004,26(4):482485.(DUSJ,ZHIHT.Experimentalresearchonthemechanicalpropertiesofgraniterockandconcreteafterhigh-temperature[J].ChineseJournalofGeotechnicalEngineering,2004,26(4):482485.)[9],,,.[J].,2004,38(7):12251228.(XIAXH,LUYP,HUANGXC,SHENWP.Experimentalresearchonultrasoniccharacteristicofmarbleundertheactionofhightemperature[J].JournalofShanghaiJiaotongUniversity,2004,38(7):12251228.)[10],,,.[J].,2004,38(6):996998.(XIAXH,WANGYY,HUANGXC,SHENWP.Experimentalstudyonhightemperatureeffect’sinfluencetothestrengthanddeformationqualityofmarble[J].JournalofShanghaiJiaotongUniversity,2004,38(6):996998.)[11],,,.[J].,2003,37(12):19001904.(DUSG,LIUH,CHENHH,QIUYP.Experimentalresearchonthedensityandwavecharacteristicsofgraniterockafterhightemperature[J].JournalofShanghaiJiaotongUniversity,2003,37(12):1900904.)[12],,,.[J].,2003,22(11):18031806.(DUSG,MAM,CHENHH,QIUYP.Testingstudyonlongitudinalwavecharacteristicsofgraniteafterhightemperature[J].ChineseJournalofRockMechanicsandEngineering,2003,22(11):18031806.)[13],,,.[J].,2004,23(14):23592364.(DUSG,LIUH,ZHIHT,CHENHH.Testingstudyonmechanicalpropertiesofpost-high-temperaturegranite[J].ChineseJournalofRockMechanicsandEngineering,2004,23(14):23592364.)