Effect of Hydraulic Conditions in controlling the Face in EPB Excavated Tunnels

Panagiotis Sitarenios, Dimitris Litsas, Anastasios Papadakos, Michael Kavvadas

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

This paper investigates numerically face stability and deformation of EPB tunnels excavated below the groundwater table. Emphasis is given in the proper simulation of the pressure exerted by the excavated material filling the front chamber of the EBP machine. The paper presents the results of 3D coupled hydromechanical analyses for tunnel face stability, using the computer code ABAQUS with the Mohr–Coulomb and Modified Cam-Clay constitutive models, for various geotechnical and hydraulic conditions. The undrained shear strength of the ground is shown to be an effective control parameter for interpreting and normalising the results under different geotechnical conditions, irrespective of the adopted constitutive model.
Original languageEnglish
Title of host publicationWorld Tunnel Congress 2015, Dubrovnik, Croatia (Proceedings in CD)
Place of PublicationDubrovnik, Croatia
Publication statusPublished - May 2015
Event2015 World Tunnel Congress - Dubrovnik, Croatia
Duration: 22 May 201528 May 2015

Conference

Conference2015 World Tunnel Congress
CountryCroatia
CityDubrovnik
Period22/05/1528/05/15

Keywords

  • EPB tunnelling
  • Face Pressure
  • Face drainage

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    Sitarenios, P., Litsas, D., Papadakos, A., & Kavvadas, M. (2015). Effect of Hydraulic Conditions in controlling the Face in EPB Excavated Tunnels. In World Tunnel Congress 2015, Dubrovnik, Croatia (Proceedings in CD) Dubrovnik, Croatia.