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.
|Title of host publication||World Tunnel Congress 2015, Dubrovnik, Croatia (Proceedings in CD)|
|Place of Publication||Dubrovnik, Croatia|
|Publication status||Published - May 2015|
|Event||2015 World Tunnel Congress - Dubrovnik, Croatia|
Duration: 22 May 2015 → 28 May 2015
|Conference||2015 World Tunnel Congress|
|Period||22/05/15 → 28/05/15|
- EPB tunnelling
- Face Pressure
- Face drainage
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.