GRUNDOMAT flies under not over Hangar 61 at London Luton Airport
TT-UK LTD was recently approached by Steve Marijewycz, Managing Director of Directional Drilling Services UK Ltd based in Bedford. He required the use of a GRUNDOMAT 130, which was needed to carry out a tricky underground bore to lay a cable duct beneath the airport hangar apron at London Luton Airport.
The application once again proved the unique accuracy and required precision of the GRUNDOMAT, which is derived from the spring loaded moving head, reciprocating chisel and multi cutter cone design.
Steve Marijewycz said “The GRUNDOMAT soil displacement hammer was the only mole available that would be able to penetrate and bore accurately through the existing engineering brick manhole”. Steve added “Even though the bore distance was relatively short at 9 metres, the accuracy required to break through the centre of the manhole was critical, as retrieval of the GRUNDOMAT due to an aborted bore, this meant that using open trenching techniques was definitely not an option, as the concrete apron had to be kept clear of obstructions at all times due to continuous aircraft movement”.
The duration of the bore and direct installation of the cable duct was completed in just two hours to the satisfaction of the customer SDC Special Projects.
The video below shows the GRUNDOMAT arriving exactly on target at the pre-determined point in the manhole.