Paper Title:
Research on the Damage Fracture of Rock Blasting Based on Velocity Response Spectrum
  Abstract

The damage caused by blasting vibration on rock mass is an extremely complex process, and has certain impact on the mechanical properties and bearing capacity of the rock, which will affect the overall stability and safe operation of the construction. Therefore, studying on the damage effect of blasting vibration is very necessary. Taking Laxiwa hydropower station project as a background, the paper computed relative velocity response spectrum using monitoring and measuring blasting velocity as an excitation, then analysis was carried out to study the relationship between the depth of rock blasting and the integral value of relative velocity response spectrum as well as the index of cooperation of the integral value and the blast vibration’s duration time. The results show that using three-parameter (velocity, frequency, duration time) was clearly superior to two-parameter (velocity, frequency) on studying the damage fracture of rock blasting, and two-parameter was better than one-parameter (velocity) by analogy.

  Info
Periodical
Chapter
Chapter 6: Geotechnical Engineering
Edited by
Paul P. Lin and Chunliang Zhang
Pages
1521-1527
DOI
10.4028/www.scientific.net/AMM.105-107.1521
Citation
X. J. Sun, J. S. Sun, "Research on the Damage Fracture of Rock Blasting Based on Velocity Response Spectrum", Applied Mechanics and Materials, Vols. 105-107, pp. 1521-1527, 2012
Online since
September 2011
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Price
$32.00
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