3种岩石高温后力学性质的试验研究

2510Vol.25No.10200610ChineseJournalofRockMechanicsandEngineeringOct.20062005092020051111()(04dz12010)(1962)[e-mail]31211111(1.2000922.232001)32020040060080030/min3TU458A10006915(2006)10194506TESTINGSTUDYONMECHANICALPROPERTIESOFTUFFGRANITEANDBRECCIAAFTERHIGHTEMPERATURESZHUHehua12YANZhiguo1DENGTao1YAOJian1ZENGLingjun1QIANGJian1(1.DepartmentofGeotechnicalEngineeringTongjiUniversityShanghai200092China2.AnhuiUniversityofScienceandTechnologyHuainanAnhui232001China)AbstractBasedontheuniaxialcompressiontestthemechanicalpropertiesoftuffgraniteandbrecciaafterdifferenthightemperaturesarestudied.Thescopeofthisresearchincludes(1)thevariationofpeakstresspeakstrainandelasticmoduluswithtemperatureand(2)therelationshipbetweenlongitudinalwavevelocityandpeakstressandpeakstrain.Thetemperaturevariesintherangeof20200400600800andtheheatingvelocityis30/min.Theresultsshowthatthepeakstressandelasticmodulusdecreasewithtemperature.Thehigherthetemperatureisthelargerthedecrementofthepeakstressandelasticmodulusare.Fortuffandgranitethepeakstrainincreaseswithtemperature.Howeverforbrecciaitseemsthatthepeakstraindecreaseswithtemperature.Furthermoretherelationshipamonglongitudinalwavevelocitypeakstressandpeakstrainpresentdifferentlawsaccordingtothetypesofrocks.Keywordsrockmechanicshightemperaturepeakstresspeakstrainlongitudinalwavevelocityelasticmodulus1()·1946·2006[17][812][10]3322.13φ50mm100mm0.05mm0.02mm35385.94768.15359.9m/s2612.72628.02610.0kg/m32.2SX30/13QYCKSY16C3130010NYL2000DU-sonic2.3()30/min4hx-y2020040060080013/min1Fig.1Temperature-timecurves33.124T/2Fig.2σP-Tcurveoftuff3800147.7MPa101.6MPa/σP/MPa2510.3•1947•T/3Fig.3σP-TcurveofgraniteT/4Fig.4σP-Tcurveofbreccia38%200200800152.9MPa105.5MPa31.1%800130.3MPa92.4MPa30%53360029%19%3.2)(pε(T)6868T/53Fig.5ComparisonofσP/σP0-TcurvesamongtuffgraniteandbrecciaafterhightemperaturesT/6Fig.6εP-TcurveoftuffT/7Fig.7εP-Tcurveofgranite3600σP/MPaσP/MPaσP/σP0εP/103εP/103·1948·2006T/8Fig.8εP-Tcurveofbreccia6008004.31036.91031.68002.61039.91033.98004.51033.410325%93T/93Fig.9ComparisonofεP/εP0-Tcurvesamongtuffgraniteandbrecciaafterhightemperatures333.331031y=x[11]VT/V0103Fig.10σP/σP0-VT/V0curvesoftuffgraniteandbrecciaafterhightemperatures1133.43[811]1213εP/103σP/σP0εP/εP02510.3•1949•VT/V011Fig.11εP/εP0-VT/V0curvesoftuffgraniteandbrecciaafterhightemperaturesT/123Fig.12ET-TcurvesoftuffgraniteandbrecciaafterhightemperaturesT/133Fig.13ComparisonofET/E0-Tcurvesamongtuffgraniteandbrecciaafterhightemperatures360080030.332.4GPa11.815.9GPa65%51%80030.7MPa19.9GPa35%1334[3]3533(1)3(2)3εP/εP0ET/GPaET/E0·1950·2006(3)(4)(5)33(References)[1]HeuzeFE.High-temperaturemechanicalphysicalandthermalpropertiesofgraniticrocks—areview[J].InternationalJournalofRockMechanicsandMiningSciencesandGeomechanicsAbstracts198320(1)310.[2].[J].199510(4)131.(WangShengzu.High-temperature/high-pressurerockmechanicshistorystate-of-artandprospect[J].ProgressinGeophysics199510(4)131.(inChinese))[3].[J].200022(3)332335.(XuXichangLiuQuansheng.Apreliminarystudyonbasicmechanicalpropertiesforgraniteathightemperature[J].ChineseJournalofGeotechnicalEngineering200022(3)332335.(inChinese))[4]AraújoRGSSousaJLABlochM.Experimentalinvestigationontheinfluenceoftemperatureonthemechanicalpropertiesofreservoirrocks[J].InternationalJournalofRockMechanicsandMiningSciences199734(3)459466.[5]ZhangZXYuJKouSQetal.Effectsofhightemperaturesondynamicrockfracture[J].InternationalJournalofRockMechanicsandMiningSciences200138(2)211225.[6]DuclosRPaquetJ.High-temperaturebehaviourofbasaltroleoftemperatureandstrainrateoncompressivestrengthandK1Ctoughnessofpartiallyglassybasaltsatatmosphericpressure[J].InternationalJournalofRockMechanicsandMiningSciencesandGeomechanicsAbstracts199128(1)7176.[7].240[J].200423(14)23652369.(LiangWeiguoZhaoYangshengXuSuguo.Testingstudyonphysicalandmechanicalpropertiesofheatedsaltrockwithin240[J].ChineseJournalofRockMechanicsandEngineering200423(14)23652369.(inChinese))[8].[J].200423(14)23592364.(DuShoujiLiuHuaZhiHongtaoetal.Testingstudyonmechanicalpropertiesofpost-high-temperaturegranite[J].ChineseJournalofRockMechanicsandEngineering200423(14)23592364.(inChinese))[9].[J].200426(4)482485.(DuShoujiZhiHongtao.Experimentalresearchonthemechanicalpropertiesofgraniteandconcreteafterhigh-temperature[J].ChineseJournalofGeotechnicalEngineering200426(4)482485.(inChinese))[10].[J].200438(6)9961002.(XiaXiaoheWangYingyiHuangXingchunetal.Experimentalstudyonhightemperatureeffectsonthestrengthanddeformationqualityofmarble[J].JournalofShanghaiJiaotongUniversity200438(6)9961002.(inChinese))[11].[J].200322(11)18031806.(DuShoujiMaMingChenHaohuaetal.Testingstudyonlongitudinalwavecharacteristicsofgraniteafterhightemperature[J].ChineseJournalofRockMechanicsandEngineering200322(11)18031806.(inChinese))[12]InadaYKinoshitaNEbisawaAetal.Strengthanddeformationcharacteristicsofrocksafterundergoingthermalhysteresisofhighandlowtemperatures[J].InternationalJournalofRockMechanicsandMiningSciencesandGeomechanicsAbstracts199734(3)688694.