Hydroelectric Power - Hydroelectric Power Stations

This is the heart of Iceland’s largest-ever industrial development; a € 1.1 billion hydroelectric power plant that took 5 years to build and required the construction of 73 km of tunnels and five dams for three reservoirs – one of the dams being amongst the largest concrete-faced rock-fill dams in the world. The full reservoir will cover an area of 57 km². The fill material of the 5 dams has a total volume of approx. 13’600’000 m³, which had to be prepared on site, then placed and compacted to achieve a watertight construction.

The project consist in an earth dam with 1.300 hectare of reservoir, 116 meters high, with a central impermeable core, where the tunnel work was emphasized. The deviation tunnels and the adduction tunnels, which were 15 km long, with different diameters, were totally shotcreted with Sigunit-L22 (1.100 tons), using a robot arm. Shotcrete was also used in the hillside where we have provided with two Aliva -246 machines.