盐岩蠕变特性和本构关系研究
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摘要
对金坛盐岩蠕变规律进行了试验研究,分析了不同应力状态和温度对盐岩蠕变特性的影响,通过试验获取了蠕变曲线和蠕变特征参数。根据其蠕变曲线特征,用黏弹塑性理论建立了盐岩蠕变本构模型。试验结果表明,稳态蠕变率是偏应力和温度的非线性函数关系,并提出盐岩的稳态蠕变本构方程。通过试验数据拟合得到本构方程中的参数,将理论和试验结果进行比较,结果表明两者的吻合性较好。
Uniaxial and triaxial creep tests have been performed on rock salt of Jintan Salt Mine on high temperature and high pressure triaxial rheological device;the creep characteristics of rock salt are investigated and the effect of stress state and temperature of rock salt are analyzed;and then the creep characteristic curve and parameters are obtained.Based on the character of creep curve of rock salt,a creep constitutive model of rock salt is established by using viscoelasto-plastic theory.Through the test results,it is shown that the steady state creep strain rate is a nonlinear function of diviatoric stress and temperature;a steady state creep constitutive model of rock salt is established.The patameters of constitutive equation are obtained by fitting test data;the theoretic results is proved well by comparison with the experimental results.
Uniaxial and triaxial creep tests have been performed on rock salt of Jintan Salt Mine on high temperature and high pressure triaxial rheological device;the creep characteristics of rock salt are investigated and the effect of stress state and temperature of rock salt are analyzed;and then the creep characteristic curve and parameters are obtained.Based on the character of creep curve of rock salt,a creep constitutive model of rock salt is established by using viscoelasto-plastic theory.Through the test results,it is shown that the steady state creep strain rate is a nonlinear function of diviatoric stress and temperature;a steady state creep constitutive model of rock salt is established.The patameters of constitutive equation are obtained by fitting test data;the theoretic results is proved well by comparison with the experimental results.
引文
[1]Paul E Senseny.Creep properties of four rock salts[A].The Mechanical Behavior of Salt of the Second Conferenc[C].Germany:Trans.Tech.Publications,1984.431-444.
[2]Mrugala M,Hardy H R.Effect of test duration on the viscoelastic parameters of salt[A].The Mechanical Behavior of Salt of the Second Conferenc[C].Germany:Trans.Tech.Publications,1988.245-262.
[3]Udo Hunsche,Otto Schulze.Effect of humidity and confining pressure on creep of rock salt[A].The Mechanical Behavior of Salt of the Third Conference[C].Germany:Trans.Tech.Publications,1993.237-248.
[4]Munson D E,Dawson P R.Salt constitutive modleing using mechanism maps[A].The Mechanical Behavior of Salt of the First Conferenc[C].Germany:Trans.Tech.Publications,1984.717-737.
[5]Cater N L,Russell J E.Modified mechanical equation of state for rock salt[A].The Mechanical Behavior of Salt Proceedings of the Second Conference[C].Germany:Trans.Tech.Publications,1984.409-430.
[6]Hunsche U.Measurement of creep in rock salt at small strain rates[A].The Mechanicl Behavior of Salt Proceedings of the Second Conference[C].Germany:Trans.Tech.Publications,1984.187-196.
[7]杨春和,高小平,吴文.盐岩时效特性实验研究与理论分析[J].辽宁工程技术大学学报,2004,23(6):764-766.YANG Chun-he,GAO Xiao-ping,WU Wen.Experiment studies and theoretic analysis of time dependent properties of rock salt[J].Journal of Liaoning Technical University,2004,23(6):764-766.
[8]吴文.盐岩的静、动力学特性试验研究与理论分析[博士学位论文D].武汉:中国科学院武汉岩土力学研究所,2002.
[9]杨春和,曾义军,吴文.深层盐岩本构关系及其在石油钻井工程中的应用[J].岩石力学与工程学报,2003,22(10):1678-1682.YANG Chun-he,ZENG Yi-jun,WU Wen,et al.Constitutive relationship of deep salt rock and its application to petroleum drilling engineering[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(10):1 678-1 682.
[10]长江水利委员会长江科学院.水利水电工程岩石试验规程[M].北京:中国水利水电出版社,2001.
[11]尹祥础.固体力学[M].北京:地震出版社,1985.
[2]Mrugala M,Hardy H R.Effect of test duration on the viscoelastic parameters of salt[A].The Mechanical Behavior of Salt of the Second Conferenc[C].Germany:Trans.Tech.Publications,1988.245-262.
[3]Udo Hunsche,Otto Schulze.Effect of humidity and confining pressure on creep of rock salt[A].The Mechanical Behavior of Salt of the Third Conference[C].Germany:Trans.Tech.Publications,1993.237-248.
[4]Munson D E,Dawson P R.Salt constitutive modleing using mechanism maps[A].The Mechanical Behavior of Salt of the First Conferenc[C].Germany:Trans.Tech.Publications,1984.717-737.
[5]Cater N L,Russell J E.Modified mechanical equation of state for rock salt[A].The Mechanical Behavior of Salt Proceedings of the Second Conference[C].Germany:Trans.Tech.Publications,1984.409-430.
[6]Hunsche U.Measurement of creep in rock salt at small strain rates[A].The Mechanicl Behavior of Salt Proceedings of the Second Conference[C].Germany:Trans.Tech.Publications,1984.187-196.
[7]杨春和,高小平,吴文.盐岩时效特性实验研究与理论分析[J].辽宁工程技术大学学报,2004,23(6):764-766.YANG Chun-he,GAO Xiao-ping,WU Wen.Experiment studies and theoretic analysis of time dependent properties of rock salt[J].Journal of Liaoning Technical University,2004,23(6):764-766.
[8]吴文.盐岩的静、动力学特性试验研究与理论分析[博士学位论文D].武汉:中国科学院武汉岩土力学研究所,2002.
[9]杨春和,曾义军,吴文.深层盐岩本构关系及其在石油钻井工程中的应用[J].岩石力学与工程学报,2003,22(10):1678-1682.YANG Chun-he,ZENG Yi-jun,WU Wen,et al.Constitutive relationship of deep salt rock and its application to petroleum drilling engineering[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(10):1 678-1 682.
[10]长江水利委员会长江科学院.水利水电工程岩石试验规程[M].北京:中国水利水电出版社,2001.
[11]尹祥础.固体力学[M].北京:地震出版社,1985.
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