TBM-tunnelling at Sauda Power Project

摘要

The Sauda river-system in Norway is from nature well suited for hydropower developments. Today four power-stations with a totoal installed capacity of 160 MW are running, with an average annual production of 1020 GWh. The plants are constructed in different periods since 1913 when the river was first developed for electric powerproduction. Each construction was the optimm solution at the time, however, modern techniques like tunnelling by a Tunnel Boring Machine -TBM-has created new alternatives for hydro-power design and greatly increased the economically exploitable potential of the river-system. The owner of the plants is therefore planning a new hydropower scheme which will increase the installed capacity to 520 MW and the average annually production to 2120 GWh.