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页数:8页
时间:2018-01-02
《a大理岩高温高压变形实验研究》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、10000569/2014/030(02)058996ActaPetrologicaSinica岩石学报Carrara大理岩高温高压变形实验研究11,2131宋茂双邵同宾李建峰嵇少丞王茜11,2131SONGMaoShuang,SHAOTongBin,LIJianFeng,JIShaoChengandWANQian1中国科学院广州地球化学研究所,同位素地球化学国家重点实验室,广州5106402中国科学院大学,北京1000493加拿大蒙特利尔综合工学院民用、地质与采矿工程系,蒙特利尔H3C3A71StateKeyL
2、aboratoryofIsotopeGeochemistry,GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences,Guangzhou510640,China2UniversityofChineseAcademyofSciences,Beijing100049,China3DépartmentdesGéniesCivil,GeologiqueetdesMines,EcolePolytechniquedeMontréal,Montréal,H3C3A7,Canada
3、20120507收稿,20121106改回SongMS,ShaoTB,LiJF,JiSCandWangQ2014ExperimentalstudyofdeformationofCarraramarbleathighpressureandhightemperatureActaPetrologicaSinica,30(2):589-596AbstractTriaxialcompressiondeformationexperimentsonCarraramarblewereperformedinaPatersongas
4、mediumapparatusata-6-3-1confiningpressureof300MPa,temperaturesof873~1173K,andstrainratesofca10~10sTheexperimentalresultsshowthatataconstantstrainrate,thestrengthofCarraramarbledecreasesastemperatureincreasesAtaconstanttemperature,thestrengthincreasesrapidlyandthe
5、nslowlywithstrainrateincreasingIntheloglogplotofstrainratevsdifferentialstress,wefindtheslopesofthefittedlinesforconstanttemperatureexperimentaldatadecreasewithincreasingtemperatureandthedataforexperimentsat873Kandforexperimentsofhighstrainratesat973K,bestfitthee
6、xponentialrelationshipTheresultsathightemperatures(eg,1073K,and1173K)andtheresultsforlowerstrainratesat973K,however,bestfitthepowerlawrelationshipwithastressexponentabout53~77Therefore,wecandrawthattherearetwomaindeformationmechanismsofCarraramarbleinourlaborat
7、oryexperiments,oneofwhichisrepresentedbytheexponentialrelationshipforhighstressesandtheotheristhepowerlawmechanismformoderatestressesKeywordsCarraramarble;Highpressureandhightemperature;Triaxialcompressiondeformation;Rheology;Geodynamics-6摘要利用高精度的Paterson高温高压流变仪对Car
8、rara大理岩在高温(873~1173K)高压(~300MPa)以及约10~-3-110s应变速率下进行了三轴压缩变形实验。结果表明,在等应变速率条件下,其强度随着温度的升高而降低;在等温和等压条件下,其强度随着应变速率的增加先快速增加而后缓慢增加。在应变速率对
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