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Excess Pore Water Pressure and Ground Consolidation Settlement Caused by Grouting of Shield Tunnelling

Author

Listed:
  • Qiongfang Zhang
  • Qihui Zhou
  • Fengchun Ye
  • Jiajia Yan
  • Nianwu Liu
  • Yadong Lou
  • Jose Renato de Sousa

Abstract

This study investigates the effect of shield tunnel grouting on excess pore pressure distributions around tunnel and ground consolidation settlement. First, it presents half-plane excess pore pressure around an unlined tunnel caused by grouting pressure based on the complex variable theory and the conformal mapping method. Second, the analytical solution for the soil consolidation is derived using the conformal transformation method and the consolidation theory of Terzaghi–Rendulic. The drainage conditions of the tunnel lining are idealized into three cases: fully drained, partially drained, and impermeable along the tunnel circumference. The impacts of the burial depth of the tunnel, the permeability coefficient of the tunnel lining and the surrounding soil, the Poisson’s ratio of the soil, the lateral Earth pressure coefficient of the soil, and the shear modulus are investigated.

Suggested Citation

  • Qiongfang Zhang & Qihui Zhou & Fengchun Ye & Jiajia Yan & Nianwu Liu & Yadong Lou & Jose Renato de Sousa, 2022. "Excess Pore Water Pressure and Ground Consolidation Settlement Caused by Grouting of Shield Tunnelling," Mathematical Problems in Engineering, Hindawi, vol. 2022, pages 1-14, May.
    • Handle: RePEc:hin:jnlmpe:1854234
    DOI: 10.1155/2022/1854234
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