For microtunnels larger than Ø1,000mm, Pezzimenti Tunnelbore has designed and commissioned a series of laser guided microtunnelling systems which use augers to transport the spoil from the excavation face of the microtunnelling head back to the drilling shaft. Augers require minimal water to be added to work effectively. Minimising the water used in microtunnelling minimises the total volume of spoil to be disposed of.

Auger – Spoil Extraction

Spoil can be removed from the shaft to the surface using an excavator, a skip bin or the bucket elevator which loads directly into a tip truck for easy disposal.

Auger Boring Spoil Extraction

Auger rod sitting in a concrete jacking pipe.

Auger Boring Spoil Extraction Microtunneling Jacking Pipe Lifted into Shaft

Pipe and auger being lowered into the shaft.

Auger Boring Spoil Extraction Microtunneling Spoil into Bucket

Jacking Pipe and Auger  in position ready to recommence microtunnelling. Spoil captured in a skip bin.

Auger Boring Spoil Extraction Microtunneling Bucket Lift Elevator

Automated spoil removal from shaft using the bucket elevator.

Auger Boring Spoil Extraction Microtunneling Bucket Elevator

Spoil being loaded onto a dump truck from the bucket elevator.

Auger Boring Spoil Extraction Microtunneling Bucket Elevator Setup

Site setup using an excavator as a crane and a bucket elevator as spoil disposal.

Pezzimenti microtunneling Auger being lowered down to the jacking frame

Auger microtunnelling head being craned onto the jacking frame, for a microtunnel beneath a railway line

Pezzimenti microtunneling Auger ready to launch

Auger microtunnelling head launching. The dry spoil returned by the auger system can be seen piling next to machine, later removed by excavator.

Microtunneling Auger Spoil extracted by conveyor belt

Auger extracted spoil is dropped onto a conveyor

Microtunnelling Auger extracted spoil to the Bucket Elevator

The bucket elevator conveys the extracted spoil to the surface