When the tunnel passes through slope area, once stability changes or landslide disasters occur, large additional stress, deformation, cracking are easily caused in tunnel, which results high risk to operation. The deformation and failure mode of induced by different types tunnel-related landslides different. However, there is no systematic classification structure systems. By investigating typi...

Shallow buried and unsymmetrically loaded tunnel is the most common type of mountain portal. Currently, studies mainly focus on stability side slope, while investigation deformation front slope after excavation relatively less. In this paper, influence gradient angle between portal was analyzed by FLAC3D. The results show that: When greater than 40°, caused larger with increase angle. order to ...

With excess slurry pressures exerted on the tunnel face, particles tend to infiltrate into soil in front of tunnel. There will be pore pressure ahead case infiltration, leading an impairment supporting effect contributed by pressure. Corresponding three infiltration scenarios distinguished forms filter cake, different transfer models are employed describe distribution. Using kinematic approach ...