BOLAÑOS TUNNEL – HIGH SPEED RAIL (SPAIN, 2012-2015)
Bolaños tunnel is a 6.8 km twin High Speed Rail tunnel. Each tube has 11 m diameter and is bored by a simple shield TBM. The maximum overburden is about 200 m with a water load of 140 m.
An important improvement in dowels design was achieved.
Check the Bolaños tunnel construction video here, video made by FCC (Fomento de Construcciones y Contratas).
PRO GEO experience has helped to solve the following problems:
- Geotechnical design of the tunnel dowels. Rock mass – structure interaction problem (TBM excavation).
- Cross passage tunnels design (NATM procedure).
- Landfills geotechnical design.
