根据岩石流变力学特性,提出了一个能描述岩石加速流变阶段的黏塑性流变模型。然后,将这个岩石黏塑性流变模型与5元件黏弹性剪切流变模型串联起来,构成了一种新的岩石黏弹塑性流变模型。利用花岗岩剪切流变试验曲线对该岩石黏弹塑性流变模型进行辨识,获得了模型的流变参数。将岩石黏弹塑性流变模型拟合结果与剪切流变试验结果进行比较,结果表明岩石黏弹塑性流变模型能够较好地描述岩石的加速流变特性。
Abstract
According to the rheological mechanical properties of rock, a visco-plastic model which depicts the creep acceleration stage of rock is proposed. This model is connected with five-component visco-elastic shear rheological model in series, thus establishing a new visco-elasto-plastic rheological model of rock. The shear rheological curves of granite is used to identify the visco-elasto-plastic rheological model, and the rheological parameters of the model are obtained. Comparison between the model fitted result and the shear rheology test result shows that the accelerating rheological properties of rock can be described effectively by this visco-elasto-plastic rheological model.
关键词
岩石力学 /
加速流变阶段 /
非线性 /
串联 /
黏弹塑性流变模型
Key words
rock mechanics /
creep acceleration stage /
nonlinear /
in series /
visco-elasto-plastic rheological model
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参考文献
[1] 黄耀英,郑 宏.节理岩体等效损伤流变模型初步研究[J].岩土力学,2011,32(12):3566-3570.(HUANG Yao-ying, ZHENG Hong. Preliminary Study of Equivalent Damage Rheological Model for Jointed Rock[J]. Rock and Soil Mechanics, 2011,32(12):3566-3570. (in Chinese))
[2] 徐卫亚,杨圣奇.节理岩石剪切流变特性试验与模型研究[J].岩石力学与工程学报,2005,24(增2):5536-5542.(XU Wei-ya, YANG Sheng-qi. Experiment and Modeling Investigation on Shear Rheological Property of Joint Rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(Sup.2): 5536-5542. (in Chinese))
[3] CRISTESCU N D. A General Constitutive Equation for Transient and Stationary Creep of Rock Salt[J]. International Journal of Rock Mechanics and Mining Sciences & Geo-mechanics Abstracts, 1993, 30(2):125-140.
[4] CRISTESCU N D. A Procedure to Determine Non-associated Constitutive Equations for Geo-materials[J]. International Journal of Plasticity, 1994, 10(2):103-131.
[5] 宋勇军,雷胜友,韩铁林.一种新的岩石非线性黏弹塑性流变模型[J].岩土力学,2012,33(7): 2076-2080.(SONG Yong-jun, LEI Sheng-you, HAN Tie-lin. A New Nonlinear Viscoelasto-plastic Rheological Model for Rocks[J]. Rock and Soil Mechanics, 2012,33(7): 2076- 2080. (in Chinese))
[6] 杨圣奇,徐卫亚,杨松林.龙滩水电站泥板岩剪切流变力学特性研究[J].岩土力学,2007,28(5):895-902.(YANG Sheng-qi, XU Wei-ya, YANG Song-lin. Investigation on Shear Rheological Mechanical Properties of Shale in Longtan Hydropower Project[J].Rock and Soil Mechanics, 2007, 28(5):895-902. (in Chinese))
[7] 徐卫亚,杨圣奇,谢守益,等.绿片岩三轴流变力学特性的研究(II):模型分析[J].岩土力学,2005,26(5):693-698.(XU Wei-ya, YANG Sheng-qi, XIE Shou-yi, et al. Investigation on Triaxial Rheological Mechanical Properties of Greenschist Specimen (II): Model Analysis[J]. Rock and Soil Mechanics, 2005, 26(5): 693－698. (in Chinese))
[8] 徐 辉,胡 斌,唐辉明,等.饱水砂岩的剪切流变特性试验及模型研究[J].岩石力学与工程学报,2010,29(增1):2776-2781.(XU Hui, HU Bin, TANG Hui-ming, et al. Experiment and Model Research on Shear Rheological properties of Saturated Sandstone[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(Sup.1): 2776-2781. (in Chinese))
[9] 胡 斌,蒋海飞,胡新丽,等.紫红色泥岩剪切流变力学特性分析[J].岩石力学与工程学报,2012,31(增1):2796- 2802.(HU Bin, JIANG Hai-fei, HU Xin-li, et al. Analysis of Shear Rheological Mechanical Properties of Fuchsia Mudstone[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(Sup.1): 2796- 2802. (in Chinese))
[10]邓荣贵,周德培,张倬元,等.一种新的岩石流变模型[J].岩石力学与工程学报,2001,20(6):780-784.(DENG Rong-gui, ZHOU De-pei, ZHANG Zhuo-yuan, et al. A New Rheological Model for Rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2001,20(6):780-784. (in Chinese))
[11]杨圣奇,倪红梅,于世海.一种岩石非线性流变模型[J].河海大学学报(自然科学版),2007,35(4):388-392.(YANG Sheng-qi, NI Hong-mei, YU Shi-hai. A Kind of Nonlinear Rheological Model for Rock[J]. Journal of Hohai University(Natural Sciences), 2007,35(4):388-392. (in Chinese))
[12]王芝银,李云鹏.岩体流变理论及其数值模拟[M].北京:科学出版社,2008.(WANG Zhi-yin, LI Yun-peng. Rock Rheological Theory and Numerical Simulation[M]. Beijing: Science Press, 2008. (in Chinese))
基金
国家自然科学基金面上项目(41172281);国家重点基础研究发展规划(973)项目(2011CB710604)
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