›› 2005, Vol. 26 ›› Issue (6): 941-945.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on distortion of singlerock and constitutive relation

JIANG Yong-dong1, XIAN Xue-fu1, SU Jian2   

  1. 1.Key Laboratory for the Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400030, China; 2.The Southwest Science Research Institute of China Railway, Chengdu 610031, China
  • Received:2005-03-08 Online:2005-06-10 Published:2013-12-17

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Abstract: The experiment conducted on MTS815 Rock Testing Machine recorded the whole-process curve of sandrock stress-strain under different confining pressures and investigated the four different phases on the curve as compacting, elastic behavior, strain hardening(plasticity) and strain softening(abruption). It analyzed at the same time the distortion character at each individual phase and the effect on rock hardness subjected to confining pressure. Then, according to this distortion character of rock, a single rock constitutive model based on Duncan Model is developed which is capable to describe rock compacting, elastic behavior and abruption. The improved model is used to illustrate the mechanism of rock distortion and abruption. It has been tested in experiment that the improved constitutive relation can do better in describing rock distortion and abruption.

Key words: rock, distortion, constitutive relation, Duncan model

CLC Number: 

  • TU 45
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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