Paper Title:
Dynamic Response of Intermittent Jointed Rock Mass Subjected to Blast Waves
  Abstract

The propagation of blast waves in intermittent jointed rock masses will result in a complex interaction between propagating waves and rock joints. Such being the case, the analysis of dynamic response of rock masses is important to rock engineering design and stability prediction. In this paper, the fracture process of intermittent jointed rock mass subjected to blast waves and initial static field, including wing crack initiation, propagation and arrest, is analyzed using linear superposition principle and sliding crack model. Crack initiation conditions and propagation lengths under incident P-waves is put forward, and the kinking effect of propagating wing cracks subjected to S-wave is also discussed. Additional, it is demonstrated that crack arrest is controlled by static field. In order to validate the correctness of dynamic response analysis, experimental investigations were performed using lucite specimens, and the experimental results show good agreement with the analytical results.

  Info
Periodical
Key Engineering Materials (Volumes 306-308)
Edited by
Ichsan Setya Putra and Djoko Suharto
Pages
1415-1420
DOI
10.4028/www.scientific.net/KEM.306-308.1415
Citation
P. Shao, Y. Zhang, W. M. Gao, Y. Q. Liu, "Dynamic Response of Intermittent Jointed Rock Mass Subjected to Blast Waves", Key Engineering Materials, Vols. 306-308, pp. 1415-1420, 2006
Online since
March 2006
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Price
$32.00
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