Analytical solutions for the steady-state seepage field in a finite seabed with a lined tunnel

Abstract

Analytical solutions for the steady-state seepage field in a finite seabed under homogeneous and isotropic conditions with a drained circular lined tunnel are developed. A numerical model is established using the COMSOL Multiphysics software to verify the solutions presented in this study, and strong agreement is found. A parameter analysis considering the seabed thickness, coefficient of permeability, tunnel burial depth and lining thickness is presented. The results indicate that the error induced by ignoring the thickness of the seabed cannot be neglected when the tunnel is close to the bottom of the seabed.