ISSN 2096-4498

   CN 44-1745/U

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Tunnel Construction ›› 2007, Vol. 27 ›› Issue (增刊1): 16-18,22.DOI: B

• wenzhang • Previous Articles     Next Articles

Analysis on Pressures and Displacement Deformations of
Rock Masses during Excavation of Tunnels in Gypsum Breccia Ground

 ZHANG Hui, LI Jian-Hua   

  1. Scientific Research Institute of China Railway Tunnel Group Co., Ltd., Luoyang 471009, Henan, China
  • Received:2007-01-18 Revised:2007-03-05 Online:2007-06-18 Published:2010-01-05

Abstract:

Taihangshan tunnel is a passengerdedicated railway tunnel located dominantly in breccia marl of Grade Ⅴ ground (gypsum breccia). By means of monitoring on the tunnel located in the special ground, the mechanisms of the deformation and displacement of the tunnel and the variation rule of the rock mass pressure are obtained to optimize the tunnel construction and the reinforcement parameters. The paper can provide reference for the design and construction of similar works in the future.

Key words: gypsum breccia tunnel excavation  , deformation analysis  , rock pressure

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