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《Chinese Jounal of Geotechnical Engineering》 2003-03
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Deformation characterslics of rock under loading and unloading conditions and experimental study of mechanical parameters

XIE Hong qiang 1,HE Jiang da 2,XU Jin 2 (1.Department of Tunnel and Underground Engineering,Southwest Jiaotong University,Chengdu 610031,China;2.College of Hydro electricity, Sichuan University,Chengdu 610065,China)  
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.
【CateGory Index】: TU452
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