Analytical Approaches of the Long-Term Behavior of a Shield Tunnel in Soft Deposit Due to Groundwater Leakage: A Review

Metro tunnels in the soft deposit often suffer from differential settlement during the long-term operation. The tunnel settlement will cause cracks of segments and opening of the joints, which may lead to groundwater penetration into the shield tunnels. Groundwater leakage may not only lead to degeneration of the infrastructures, but also it causes long-term reductions in pore pressures and associated consolidation settlement around tunnels. Serious groundwater leakage will cause tunnel settlement and accelerate groundwater leakage. In this paper, the analysis methods on the impact of groundwater leakage that adopted in the previous literatures, e.g. field monitoring, analytical method, and numerical simulations, are summarized. The advantages and disadvantages of these methods are also presented. At present, only a few field evidences that groundwater leakage cause reduction of pore water pressure and soil consolidation were obtained. The analytical methods often adopt two-dimensional model under the plane strain conditions with many hypothesis, which make it only applicable for qualitative analysis. Numerical simulation has been commonly conducted by assuming the permeability of the lining remains constant.

• Record URL:
  https://doi.org/10.1061/9780784479278.029
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784479278
• Supplemental Notes:
  • © 2015 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Yuan, Y
  • Wu, H N
  • Xu, Y S
  • Shen, S L
• Conference:
  • International Symposium on Systematic Approaches to Environmental Sustainability in Transportation
  • Location: Fairbanks Alaska, United States
  • Date: 2015-8-2 to 2015-8-5
• Publication Date: 2015-7

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 308-317
• Monograph Title: Innovative Materials and Design for Sustainable Transportation Infrastructure

Subject/Index Terms

• TRT Terms: Deposits (Geology); Groundwater; Leakage; Shields (Tunnels)
• Subject Areas: Geotechnology; Highways; I25: Design of Tunnels; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 01568529
• Record Type: Publication
• ISBN: 9780784479278
• Files: TRIS, ASCE
• Created Date: Jun 29 2015 9:13AM