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| Inversion of Mechanical Parameters of Squeezing Soft Rock and Identification of Rheological Model |
| ZHAO Xu-feng1，SUN Jun2 |
| 1. China International Engineering Consulting Corporation, Beijing 100044, China; 2. Tongji University, Shanghai 200092，China |
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Abstract Research purposes: Rational mechanics parameter of squeezing rocks is very important for understanding the mechanical characteristic of rocks and improving the reliability of numerical simulation. Based on the displacement time series from field monitoring, rheological parameter of rocks were obtained with numerical inversion analysis method, and visco-elastic constitutive model for squeezing rocks were identified in this paper. Rational constitutive model and rheological parameter can be provided for stability analysis of tunnel in squeezing ground.
Research conclusions: A method for identification of Theological model and inversion of mechanical parameters was proposed. This proposed method is based on the theories of rock mechanics and on-site measurement, which can be as the bridge linking the theory with practice.
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Received: 26 March 2008
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[1] 王芝银，杨志法，王思敬.岩石力学反演分析回顾及进展 [J].力学进展，1998,28(4) : 488-498.
[2] Sakurai S.，Takeuchi K.，Back Analysis of Measured Dis- placement of Tunnel [ J ]，Rock Mech. Rock Engng.,1983， 16(3) : 173-180.
[3] 杨林德.岩土工程问题的反演理论与工程实践[M].北 京:科学出版社，1999.
[4] Yang Zhifa, Wang Zhiyin, et al, Back-Analysis of Viscoe- lactic Displacements in·Sofr Rock Road Tunnel[J]，Int. J. Rock Mech. &Min. Sci.，2001，38(2):331-341.
[5] Li Yunpeng, Wang Zhiyin, et al, Three Dimension Back A- nalysis of Viscoelastic Creep Displacements[ A]. Pros. 3rd Int. Conf. on Underground Space and Earth Sheltered Build- ings [ C ] . Shanghai : Tongji University Ptress ,1988.
[6] 孙钧.岩石材料流变及其工程应用[M].北京:科学出版 社，1999.
[7] 朱珍德，徐卫亚.岩体粘弹性本构模型辨识及其工程应 用[J].岩石力学与工程学报，2002 , 21(11):1605- 1609.
[8] 徐平，杨挺青.岩石流变试验与本构模型辨识[J].岩石 力学与工程学报，2001,20(增刊):1739-1744.
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2008, Vol. 25 
