Paper Title:
The Effect of Confining Pressures on Rock Fracturing under Dynamic Loads
  Abstract

In order to investigate the effect of confining pressures on rock dynamic fracturing under dynamic loads, a 2D finite difference dynamic numerical model for a circular rock sample with a single centralized borehole is developed. According to the material properties and loading conditions, shock and linear equations of state are combined and applied to the rock material in this model. A modified principal stress failure criterion is applied to determining material status. It is shown that as the increase of mining depth, the extent of blasting-induced damage of rock increases significantly.

  Info
Periodical
Chapter
Chapter 1: Key Engineering Materials
Edited by
Jun Hu and Qi Luo
Pages
255-258
DOI
10.4028/www.scientific.net/AMR.320.255
Citation
Z. M. Zhu, Z. R. Zhou, Y. Q. Li, Y. X. Li, "The Effect of Confining Pressures on Rock Fracturing under Dynamic Loads", Advanced Materials Research, Vol. 320, pp. 255-258, 2011
Online since
August 2011
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Price
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