Benefits from Auger Boring:

Auger Boring is a technique for the bored Installation of a casing pipe into the ground.

As the name Auger Boring implies, the excavation technique employed is that of using a rotating auger chain/flight with a cutter head. The Cutter head is driven by, and is positioned at the lead end of, an auger string that has been established within the casing to allow rotation. Rotating the helical auger chain within the casing pipe allows the Cutter Head to excavate the ground at the face, with soil being removed back along the Auger string within the Casing Pipe to the launch shaft or pit. Spoil is then removed.

The installation process requires the establishment of a launch pit dimensioned to allow the installation and operation of the Auger Boring Machine and the required pipe length to be accommodated within it.

 

 

The Auger Boring machine is set up on a set of tracks or rack and pinion system on the line and level required for the casing installation. The first casing pipe length is positioned at the head of the machine with its auger flight already installed. The Cutter Head is at the head of this Auger flight. The Auger Boring machine rotates the auger flight and thus the cutter head as it thrusts forwards along the track or rack and pinion arrangement. The Cutter Head excavates the ground and removes spoil to the launch which is then removed. When the Auger Boring Machine reaches the end of its stroke, governed by the length of the track/rack arrangement, the casing pipe is released and the machine is withdrawn to its original starting point. A new length of pipe is positioned with its own auger flight in place, the auger flights are connected together to drive the cutter head and the pipe ends welded to form a continuous pipe length. The excavation and thrust process is repeated in this way until the drive length required is completed with the arrival of the cutter head at a reception pit.

    

 

The drive is completed with the withdrawal of the Auger flight chain from within the casing pipe and the casing being cleaned out of all remaining spoil leaving only, the now empty, casing pipe in the ground. The product pipe(s), cables or drainage system can then be installed within the casing pipe as required, on a precise line and level if necessary. Grouting of the Annular Void is then performed to complete the Annular Installation Process.