ANCHOR-/DRILL AND SHOTCRETE DEVICE AB-1
for adaption at tunnel boring machine

The AB-1 has been designed and manufactured on behalf of AKER Wirth, Erkelenz for the project “power plant Limmern, Switzerland”.

>Special Drill Booms > AB-1
Technical Data:

Carriage at the anchor beam
- Length:                                   5.300 mm
- drill operating length:              4.000 mm
- rotational angle:                  each 90 d
- axial displacement:          each 2000 mm

Carriage at the exploratory beam
- Length:                                    3.900 mm
- operating length:                     1.850 mm
- standard boring tube length:   1.500 mm
- max. drilling diameter:                 100 mm
- max. feed force:                            30 kN (limited)
- max. retraction force:                    70 kN
- swivel area:                                +4,7 d./5,0 d

Shotcrete Device
- performance:                              3,5 qm/h
- max. layer thickness:                  100 mm
- rotational angle:                each 180 d
- axial displacement:          each 2000 mm