Location
In the town of Malmberget approx. 100 km south of Kiruna in northern Sweden.
Client
LKAB
Scope of Work
Close to 3.250 m of inclined raises in diameters between 3.09-4.5 m for ventilation (both primary and secundary). Longest raise: 402 m.
Project description
The largest raised shafts to full diameter in Scandinavia to this date. Performance from surface location during winter period with temperatures dropping to -30 degrees Celcius. LKAB is increasing and upgrading the ventilation capacity in the Vitåfors Mine. The project is called "Vent 2000" and the main scope of work is two 4.5 m raises from the surface down to level 840 and a number of secondary raises to increase the ventilation capacity at the new production level. Skanska Raise Boring AB is the subcontractor for the raise boring and Skanska Berg & Bro for the tunnel development necessary for the raises. ABB is the supplier of the new fan system.
Equipment on Site
Robbins 97 DC, Rhino 2000 DC and Rhino 2008 H Sandvik reamers and cutters.
Project duration
Summer 1999 - 2002.
Contact
Mr Bo Bergström
Project Manager (Vent 2000), LKAB
Phone: +46 970 710 00
Fax: + 46 970 236 00