ABSTRACT
The 64 km long Brenner Base Tunnel is the core of the SCAN-MED Trans-European Corridor. This railway tunnel consists of two single track tubes, cross passages every 333 m, an exploratory tunnel – which lies between 12 to 18 m below the main tunnels, and three emergency stops. Especially in the area of the emergency stops, a variety of underground construction activities are carried out in the immediate vicinity, partly in very difficult geological conditions. The complexity of the surrounding conditions, with distances between cavities of a few meters only, intersecting structures, excavation sections up to 300 m2, overburden up to 900 meters, in partly squeezing rock conditions lead to a significant interaction between the structures. To cope with these complexities is a major challenge for all involved. The paper describes and shows in several examples, the problems and the measures applied to the planning and construction process.
