The radius within the alignment of the tunnel is approximately 600m, with a maximum gradient of 8.6 per mille.
The Rupertus Tunnel, designed to accommodate the Europcan structure gauge requirements, is 330m long with an excavated cross section of 110m2.
Ground conditions for tunnelling are particularly difficult at this location, where soft ground comprising sand and gravels present challenging engineering problems in this environmentally sensitive area. Currently, there are several such rail projects under construction or in the process of design: the twin-track Rupertus Tunnel is one of them.Ĭonstruction of this tunnel, part of the Tauernbahnstrecke between Salzburg and Wörgl to the south, has been expedited to dovetail with the construction of a hydro station which involves diverting the Salzach River near the north portal. Its mountainous terrain dictates the need for tunnels of varying lengths. In today's world, the continent of Europe is being traversed by high-speed railways and Austria is updating its rail system accordingly. The need for communications in the modern world and the ever increasing traffic have meant that many road and rail tunnels have had to be built through the surrounding mountains to facilitate the movement of people and freight. The baroque city of Salzburg, birthplace of Mozart, was built in a setting of breathtaking beauty, dominated by the Hohen Salzburg, the mediaeval fortress on the Mönchsberg. Canopies consisting of a primary shotcrete shell reinforced with lattice girders and mesh are being constructed at the portals, the northern one being 45m long to accommodate the weight of two roads which will eventually pass overhead with an overburden of only 1m. The tunnel is being built in loose alluvial sands and gravels which are responding well to the NATM method. Construction of a twin-track NATM rail tunnel outside Salzburg in Austria is proceeding according to schedule.
0 kommentar(er)
