On behalf of Windpark Bärofen GmbH, a total of eight wind turbines are being built on the Koralpe at an altitude of around 1.600 meters, which will supply approximately 25.000 households with electricity in the future.

To transmit the generated energy, a power line will be built from the Koralpe mountain range to Wolfsberg. The necessary trenchless cable laying will be carried out by the DPB GmbH implemented as a subcontractor of the executing joint venture ARGE Porr / Leyrer + Graf.

As part of the project, the DPB GmbH A total of nine drilling sections, each with four parallel sections Horizontal directional drilling with a pipe diameter of OD 225 and a center-to-center distance of one meter. The total length of all boreholes is approximately 1.400 meters. A modern drilling rig is used to carry out the drilling work. Tracto 18ACS HDD system for use.

The project is being carried out under challenging conditions: elevation differences of up to 90 meters, difficult access routes, confined spaces, rocky and mixed soils, and a wide variety of existing structures demand the utmost precision in planning and execution. Furthermore, the water supply for the horizontal directional drilling rig must be delivered via tanker truck from Wolfsberg.

The disposal and transport of the drilling mud generated within the construction site also require a significant logistical effort. This is accomplished using specialized pumps.

Despite difficult topographical and geological conditions, the project impressively demonstrates the possibilities of modern technology. HDD technology opened. At the same time, the DPB GmbH an important contribution for the expansion of renewable energies and towards a sustainable energy future for Austria.