Method for hauling pipeline into borehole, involves generating feeding force for bore process from feeder device outside bore hole, where feeding force is transferred to drilling shaft

摘要

The method involves generating a feeding force for the bore process from a feeder device (8) outside the bore hole (1). The feeding force is transferred to a drilling shaft (5) having cutting wheel bearing by an axially moved pipeline (7). An asymmetric cutter head (6) is continuously rotated in the clockwise or anticlockwise direction for straight sections of a drilling line (4). The continuous rotary movement of the asymmetric cutter head is replaced by cyclic rotary movements in the clockwise or anticlockwise direction for the curved sections of the drilling line.