- May 31, 2016
The Lötschberg Base Tunnel, 34km long, is at the heart of the western railway across the Alps in Switzerland. The project includes the construction of 24km of single-track tunnel with an excavation diameter of 64 m², as well as cross-drifts and other auxiliary drifts. In total, 1.8 million m³ of rock needs to be excavated and 700,000 m³ of concrete produced for the shotcrete lining. The method of excavation is blast driving in three tubes each 8km.
Prior to the main contract, an access tunnel with a length of 1.6km and a control centre consisting of two chambers were driven. The excavated material will be removed by conveyor belt. The excavated material will be used to produce the aggregates for the required volumes of concrete. The concrete equipment will be installed in one of the two chambers of the control centre.