Paper Title:
Selection of Construction Parameters in Heading Pre-Reinforcement Working Method for Liuyang River Tunnel on Wuhan-Guangzhou High-Speed Railway
  Abstract

The Liuyang River Tunnel on Wuhan-Guangzhou High-Speed Railway goes through the bottom of Liuyang River, the geological condition of which wall rock is not suitable for the construction. The paper proposes the heading pre-reinforcement method, namely pre-reinforcing core soil ahead of heading with fiberglass rockbolt in construction in order to optimize the construction methods and avoid both the deformation inside the tunnel and surface subsidence, and to ensure safety of tunnel construction. In order to determine the reasonable construction parameters, the paper obtains reinforcement density and length of fiberglass rockbolt, pre-reinforcement method on outline of heading, excavation step length and other construction parameters, by the numerical simulation, the indoor model tests and other methods, and analyzes its sensitivity. It is shown by the practices in construction that the selected parameters are reasonable and significantly effective, thus providing valuable experience for promotion and application of heading pre-reinforcement method.

  Info
Periodical
Advanced Materials Research (Volumes 361-363)
Chapter
Chapter 11: Environmental Protection and Economic Development
Edited by
Qunjie Xu, Honghua Ge and Junxi Zhang
Pages
1730-1739
DOI
10.4028/www.scientific.net/AMR.361-363.1730
Citation
Z. M. Xiang, R. A. Yuan, T. Y. Qi, "Selection of Construction Parameters in Heading Pre-Reinforcement Working Method for Liuyang River Tunnel on Wuhan-Guangzhou High-Speed Railway", Advanced Materials Research, Vols. 361-363, pp. 1730-1739, 2012
Online since
October 2011
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Price
$32.00
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