›› 2003, Vol. 24 ›› Issue (6): 940-942.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experiment study on properties of stress relaxation of rock under deformation at peak load

TANG Li-zhong, PAN Chang-lang   

  1. School of Resources and Safety, Central South University, Changsha 410083, China
  • Received:2002-08-23 Online:2003-12-10 Published:2014-08-19

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Abstract: The stress relaxation experiments of rocks under the deformation at peak load and load-unload experiments before peak load are carried out. The results of experiments show that the form of the relaxation curves of rocks under the deformation at peak load descends in step form; the stress relaxation of rock under the deformation at peak load is discontinuous, that is, alternant between quickly and slowly, which is the resut of the synthetic action of slip and extension of existing cracks and creation of new cracks; and integrality of rock structure and the performance of store of elastic deformation energy of rock have obvious influence on the number of stress descending steps and stress relaxation time.

Key words: rock, peak load, property of relaxation

CLC Number: 

  • TU 458
  • 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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