Installing piles or tunnel setions using two or more syncronised impact drivers

摘要

An arrangement (1) for installing building elements having a diameter in excess of 5 meters, and for installing tunnel sections, into a ground formation is disclosed. The arrangement includes a building element (2), on which two or more impact drivers (3) for delivering blows to the element (2) are mounted. The arrangement further has a control system for synchronising the blows to be delivered to the element (2), wherein the control system is able to synchronise the blows within 10 milliseconds.