Aker Wirth offers a wide range of equipment for tunneling,
exploration drillingand the construction of shafts for ventilation,
production or any other purpose.
Tunnel boring machinesAker Wirth manufactures and supplies
tunnel boring machines for mechanizedtunnel driving for all
geological conditions and all environmental requirements.Aker Wirth
machines are in use in tunnel boring projects all over the world
andfor the excavation of a wide variety of tunnels.
Hard rock tunneling equipmentAker Wirth tunnel boring machines
(TBMs) for hard rock are classified into twotypes: open hard rock
TBM (known as Aker Wirth gripper TBM) for boring instable rock, and
shielded hard rock TBM for tunneling in varying rockformations that
alternate between stable and unstable formations. Specialtypes of
TBM of this category are machines for the enlargement of
tunnels,Aker Wirth reamer TBM (TBE) and for inclined tunneling.
Mixed rock tunneling equipmentFor tunneling in mixed ground
formations hard and soft Aker Wirthprovides shielded machines
furnished with the functional features of hard rockTBM and soft
ground TBM. Subject to project requirements, the soft
groundfeatures of an earth pressure balance TBM or a hydro-/slurry
shield TBM willbe introduced.
Soft rock tunneling equipmentTunneling in soft and unstable
geological formations requires the permanentsupport of the tunnel
being bored. Aker Wirth provides earth pressure balanceTBM or
hydro-/slurry shield TBM for these projects. Tunneling is performed
inclosed mode with pressurization of the excavation face.
Aker Wirth was the first manufacturer in the world to equip a
hard-rock tunnelboring machine with undercutting technology and was
awarded an InnovationPrize for this in 2005.
Mobile tunnel minerThe mobile tunnel miner was specially
developed for hard rock tunneling. TheMTM can excavate any shape of
tunnel (rectangular, horse-shoe or circular).
The MTM is working with the 'undercutting technique,' requiring
less cuttingforces than with a normal hard rock tunnel boring
machine.
The machine is equipped with a crawler unit and a gripper
system. Thewalking unit allows the MTM to move without using the
crawlers. The MTM isequipped with three, four or eight cutting
arms, depending on the size of thetunnel. The muck is transported
to the rear of the machine similarly as with aroadheader.
Raise boringFor decades raise boring has been an accepted method
for the installation ofproduction and ventilation shafts and ore
passes for mines. It is also a widelyused technology in
infrastructural projects for tunnel ventilation or surge shaft
Aker Wirth hard tocktunnel boring machineused in
aninfrastructure project inSpain.
Aker Wirth was the firstmanufacturer in theworld to equip
ahard-rock tunnel boringmachine withundercutting technologyand was
awarded anInnovation Prize for thisin 2005.
The mobile tunnelminer (MTM) is aflexible and innovativesolution
for hard rocktunneling.
HG330-SP worldrecord holder with 7.1mdiameter.
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in hydro-electric power projects.
Aker Wirth raise boring machines and cutters have been in
operation in thehardest rock, up to 700MPa USC. The equipment
ranges from 112kW to600kW installed power, the cutting diameters
from 1m to 6m and the boringdepths up to 1,300m.
Aker Wirth built the worlds largest raise borer, the HG 380 with
an operatingtorque of max. 710kNm. Aker Wirth raise boring machines
hold the worldrecord for the largest diameter raise (7.1m) and the
longest raise (1,260m).
Shaft boring solutionsFor large diameter shaft boring, Aker
Wirth offers two solutions:
Blind shaft boring machine (VSB)Shaft reaming machine (SB)
In the latter case the excavated muck falls through the pilot
hole to a lowerlevel. The pilot hole of 1m-2m diameter can be
excavated with a raise boringmachine.
If a pilot hole is not possible, a blind shaft boring machine
needs to beemployed, where the excavated material is transported
through the shaft to thesurface.
Cutters and toolsFor each of our products Aker Wirth supplies
the necessary spare parts andcutter wear parts. The Aker Wirth
cutters are strong, wear resistant and haveproven their reliability
in the field, leading to high production rates and lowcosts per ton
of production.
Contact Details
Aker Wirth GmbHKoelner Strasse 71-
73Erkelenz41812GermanyContact: Ms Martina RoheTel: +49 2431 83
358Fax: +49 2431 83 455Email:
[email protected]:
[email protected]:
www.akersolutions.com/akerwirthURL: www.wirth-europe.com
For large diameter shaftboring, Aker Wirthoffers two
solutions.
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