Abstract:

The influence factors of the seepage volume in  submarine tunnels were studied by means of numerical simulation. A large number of models with different model scales and boundary conditions were built for the numerical simulation. The computed results showed that when the distance from the boundary to the tunnel profile was at least 7 times  the tunnel diameter, an accurate seepage volume could  obtained, and the fixed boundary makes the seepage volume be overestimated, while the free pore pressure boundary was  underestimated.

Key words: seepage volume; submarine tunnel; numerical simulation