Paper Title:
Study on Rock Unloading Failure and its Effects on Rock Burst
  Abstract

The mechanical parameters and failure characteristics were obtained based on the results of triaxial unloading tests of limestone. Results show that: The evolution of volumetric strain is determined by lateral strain under unloading condition. Failure modes of rock can be classified into three types. Deformation modulus decreases and Poisson ratio increases in the process of unloading. Mohr-Coulomb criterion can not describe rock unloading failure strength property. Rock burst occur during tunnel excavation are closely related to the rock unloading failure characteristic.

  Info
Periodical
Chapter
Chapter 3: Frontiers of Civil Engineering
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
1455-1458
DOI
10.4028/www.scientific.net/AMM.71-78.1455
Citation
L. M. Zhang, Z. Q. Wang, "Study on Rock Unloading Failure and its Effects on Rock Burst", Applied Mechanics and Materials, Vols. 71-78, pp. 1455-1458, 2011
Online since
July 2011
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Price
$32.00
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