Paper Title:
Research of Influence Factors of Initial Crack with Slotted Charge Blasting
  Abstract

By numerical simulation, the researches of effecting initial crack forming with slotted charge blasting are performed. The effecting factories conclude radial uncoupled parameter α and seam width W. Herein α adopts 1.43, 1.67 and 2, and 4, 6, 8 and 10 are adopted by W separately. The pressure peak is 15.5 GPa under α=1.67, and formed long cracks. With 6 and 8 mm seam widths, energy focus phenomenon is remarkable. The results show that initial damage of rock are decided by peak pressure of gas and function time. The seam width has significant effect to initial damage. With W adopting 6 and 8 mm, effective energy propagation is ensured and excessive damage area is avoided. The experiments validate the simulation results.

  Info
Periodical
Advanced Materials Research (Volumes 143-144)
Edited by
H. Wang, B.J. Zhang, X.Z. Liu, D.Z. Luo, S.B. Zhong
Pages
797-801
DOI
10.4028/www.scientific.net/AMR.143-144.797
Citation
G. L. Yang, R. S. Yang, C. Huo, C.C. Pan, "Research of Influence Factors of Initial Crack with Slotted Charge Blasting", Advanced Materials Research, Vols. 143-144, pp. 797-801, 2011
Online since
October 2010
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$32.00
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