As part of a major project within the BAUER Group to the amount of 65 mio. Euro, KLEMM Bohrtechnik recently delivered three universal drilling rigs to build a cut-off wall for the diamond mine DIAVIK in Canada. Due to the geographical location the project presents special challenges: 220 km south of the Arctic Circle work can only be done between May and October. The three KLEMM drilling rigs type KR 806-3F have been built and equipped to withstand these extreme weather conditions.
The drilling method of choice is a cased down the hole hammer drilling system. This drilling system uses the drill bit of the down the hole hammer to drag the outer casing into the drill hole. The handling system HBR 120 was further developed for adding and extracting the drill string. The HBR 120R with the newly patented rotation function allows the gripper, independent of the rotary head and special preventer, to take the casing out of the Mag. 2.1V and connect the casing to the already drilled casing.
Logistics is another major challenge as the transport of large equipment is only possible during an eight week time frame in the winter months when the ice road to the mine is open. The whole project depends on thoroughly planned schedules and logistics.
After extensive functional testing and final acceptance by the customer the KLEMM drill rigs started their journey by truck and ship at the end of November in due time. They are scheduled to start working at their final destination in three-shift operation from May of 2016.
KLEMM drilling rig type KR 806-3F