Neubau Bahnstromkraftwerk Obervellach II

Abstract

AbstractIn the interests of climate protection, ÖBB Infrastruktur AG traditionally focuses on the sustainable use of hydro‐electric power for the generation of traction current for the railways. After about 100 years in service, the existing Obervellach I and Lassach power stations will be replaced by the more efficient new Obervellach II and Kaponig plants. With an increased output of 38 MW and a regular working capacity of 125 GWh per year, around 30,000 high speed journeys from Villach to Vienna will be possible.The challenges in the course of the submission, tender and project planning were the complexity of the project and its size. In particular, the hydraulic, geographical, geological and ecological conditions required cross‐disciplinary cooperation in all phases of the planning. Likewise, close coordination between the contractor and the local construction supervision took place and continues to take place in the course of the project.The vastness of the project area requires sophisticated logistics in its execution. The tunnelling work, in particular, was challenging due to the small cross‐section to be excavated and the tunnel length. A special feature is the use of a full‐round formwork carriage. During the work along the high pressure down pipe in impassable terrain, using a cableway for carrying material, the focus is on the parallel health and safety arrangements in the construction and equipment activities. The whole project is planned to be commissioned in March 2024.