›› 2009, Vol. 30 ›› Issue (S2): 446-451.

• Geotechnical Engineering • Previous Articles     Next Articles

Discussion on settlement standard of ground surface during tunnelling

AN Yong-lin1, 2, PENG Li-min2, ZHANG Feng3, WU Bo3   

  1. 1.Hunan College Key Laboratory of Construction Process, Quality and Safety of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; 2.School of Civil and Architectural Engineering, Central South University, Changsha 410075, China; 3.China Railway No.4 Engineering Group Co., Ltd., Hefei 230023, China
  • Received:2009-08-18 Online:2009-08-10 Published:2011-06-21

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Abstract: Ground surface settlement is an important factor to evaluate surrounding rock stability of shallow tunnel. Based on analyzing of the relation between surface settlement monitoring importance and the depth tunnel, determination principles of the settlement standard are discussed. Focusing on the section without neighboring structures, settlement standard of the ground surface is studied considering rock stability, empirical formula and relative codes. The method is applied to Liuyang River tunnel in Wuhan-Guangzhou passenger dedicated line. Results show: urban tunnel’s deformation standard is lower than mountain tunnel’s standard; shallow tunnel’ deformation standard is lower than that deep tunnel’s; the harder the rock is, the lower the deformation standard is; the smaller the tunnel span is, the lower the deformation standard is; the higher the side wall is, the lower the deformation standard is; the main influence factor is the rock’s property, the next is tunnel span

Key words: tunnel engineering, settlement standard, tunnel construction, rock stability

CLC Number: 

  • U 459.2
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