Paper Title:
The Comparative Study on the Impact of Tunnel Excavation with Footage Different CRD to Testability of Surrounding Rock
  Abstract

This article used Geotechnical Engineering General Software FLAC3D to simulate the tunnel CRD method under 1.5m, 2.0m, 2.5 m, 3.0 m footage separately and analysis the influence to the tunnel surrounding rock stability in the different footage construction. This paper selected a real tunnel project as the research object and analysis comparatively the rule and characteristic of various methods of tunnel surrounding rock displacement, stress distribution and the plastic zone size through simulated computing the different footage construction. The results show that,Ⅰ.Considered from the surrounding rock stress control that the 1.5m footage adjacent formation stress adjustment effect is best, next is 2.0m, 2.5 m, 3.0 m;Ⅱ.Considered from the plastic zone size that the 1.5m footage control effect is best, next is in turn 2.0m, 2.5 m, 3.0 m;ⅢConsidered from the surrounding rock displacement control that 1.5 meter footage adjacent formation control effect is best, but 2.0 meter, 2.5 meters and 3.0 meter phase differences are not big.

  Info
Periodical
Advanced Materials Research (Volumes 243-249)
Edited by
Chaohe Chen, Yong Huang and Guangfan Li
Pages
3417-3422
DOI
10.4028/www.scientific.net/AMR.243-249.3417
Citation
L. P. Shi, B. S. Jiang, Y. Q. Zhao, "The Comparative Study on the Impact of Tunnel Excavation with Footage Different CRD to Testability of Surrounding Rock", Advanced Materials Research, Vols. 243-249, pp. 3417-3422, 2011
Online since
May 2011
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