Paper Title:
Rock Burst Analyse in Qirehataer Diversion Tunnel
  Abstract

Rock burst is a geological hazard which occurs when hard and brittle rock mass is excavated under high in-situ stresses or high stress concentration. The Qirehataer diversion tunnel has 15.66 km long at a maximum depth of 1720 m. About 64.5% of the tunnel is located in gneissic granite. During excavation of the tunnel, light to moderate rock burst occurred in about 300 m length of the tunnel. This paper provides the analysis of the characteristics and stress conditions in the rock burst site using the stress conditions around the excavation, and provides an explanation on the reasons why rock burst occurred from the beginning to middle of the vault on the right side of the tunnel section, and the most serious situation is located at 60° with respect to horizontal. Stress release hole and bolt or bolt and net are used to prevent and manage rock burst which have been shown to be effective in this case.

  Info
Periodical
Chapter
Chapter 1: Applied Mechanics Mechanical Engineering
Edited by
Honghua Tan
Pages
352-355
DOI
10.4028/www.scientific.net/AMM.138-139.352
Citation
J. F. Bian, J. J. Zhou, G. B. Zhao, "Rock Burst Analyse in Qirehataer Diversion Tunnel", Applied Mechanics and Materials, Vols. 138-139, pp. 352-355, 2012
Online since
November 2011
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Price
$32.00
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