Deformation characterslics of rock under loading and unloading conditions and experimental study of mechanical parameters

XIE Hongqiang; HE Jiangda; XU Jin

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Volume 25 Issue 3

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Chinese Journal of Geotechnical Engineering > 2003 > 25(3): 336-338.

XIE Hongqiang, HE Jiangda, XU Jin. Deformation characterslics of rock under loading and unloading conditions and experimental study of mechanical parameters[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(3): 336-338.

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Deformation characterslics of rock under loading and unloading conditions and experimental study of mechanical parameters

1.Department of Tunnel and Underground Engineering Southwest Jiaotong University Chengdu 610031 China 2.College of Hydro electricity Sichuan University Chengdu 610065 China

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Published Date: May 22, 2003

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Abstract

Abstract

Through the stress stain test,the difference of deformation characters istics of rock under loading and unloading is found.At the same time,combining with the test results and introducing concept of damage mechanics, damage evolvement equations of rocks with different characteristics are derived in this paper.
- loading,
- unloading,
- triaxial test,
- damage mechanics,
- damage evolvement equation