The Effect of Confining Pressures on Rock Fracturing under Dynamic Loads

Abstract:

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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:

Edited by:

Jun Hu and Qi Luo

Pages:

255-258

DOI:

10.4028/www.scientific.net/AMR.320.255

Citation:

Z. M. Zhu et al., "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:

$35.00

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