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Single Shield TBMs are the right choice for brittle or soft rock. In shield tunnelling, the tunnel is lined with concrete segments. To tunnel forward, the hydraulic thrust cylinders of the Single Shield TBM push against the last installed lining ring.
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This type of boring machine is used for tunneling in stable to unstable rock for the excavation of traffic tunnels (road and rail), supply tunnels (water, gas and electricity) and other special applications.
The main elements in the construction of the shield tunnel boring machine are the shield which gives the machine its name, a construction like a steel tube in which all other components of the machine are embedded, the cutter head and its drive housing, the advance mechanism and the robot-like device for installation of the tunnel lining, the so-called erector. The tunnel lining, usually consisting of prefabricated concrete sections, is installed with the erector, protected by the rear shield mantle, the so-called tail shield.
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Slurry shield tunnel boring machines
Bentonite slurry, consisting of a specific clay and water mixture is universally used in boring and digging operations. The slurry has numerous properties: sealing of the cutting face, reduced friction on the TBM's structure, and transport of cuttings to the separation plant outside the tunnel.
The basic principle of this TBM is to maintain the tunnel's cutting face during the excavation phase by filling the working chamber, located behind the cutterhead, with slurry.
Slurry pressure is carefully controlled by a large air bubble which is maintained by a separately-controlled air supply system. This air bubble acts as a damper by absorbing sudden variations in mucking output.
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21 SGBC-CC
Three boom jumbos can be supplied with three different boom sizes. The light alloy feeders can be supplied in lengths from 14’ to 22’, to suit the customer’s requirements. The largest boom gives a maximum drilling height of 11,5 meters and a maximum face width of 16 meters.
Motabert HC 109 drifters are standard.
The jumbo can be supplied with or without a service basket. Rod handling equipment for longhole drilling is available. The jumbos are supplied with Bever Control computer systems. The systems can be adapted to level of automation required by the customer. Full logging facilities and m.w.d. are available.
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All-new hydraulic wheel jumbo features high capacity HD210 drifter with a new dual damper mechanism attains the extremely highly drilling performance and prolongs the service life of drilling tools.
Experience how smooth and speedy drilling can be.
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Fleet of Robofore and Pantofore
Robodrill has at it's disposal a fleet of :
- 10 Robofores (3 booms)
- 20 Pantofores ( 1 boom, 1 boom + loading basket, 2 booms, 2 booms + loading basket)
These units are available for rent with mechanical supervision and operators training programs.
Mechanical supervisors and operators are available and can be provided if required.
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Atlas Copco Boomer is a range of high-capacity drill rigs providing the best overall economy, production capacity and well-proven reliability. The Boomer range can meet all your demands from 6 to 206 m2 coverage area. The unique Atlas Copco boom system offers outstanding flexibility and precision to ensure straight-hole drilling performance in high-quality tunnelling and drifting for mine development and production. An extensive range of rock drills is available from 16 kW up to 30 kW impact power.
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2 ABC-CC
This is a smaller jumbo with articulated steering and booms that give a maximum drilling height of 8 m. and a maximum face width of 13 meters. Light alloy feeders in lengths from 14’ to 22’, to suit the customer’s requirements are standard.
Montabert drifters are standard.
The jumbo can be supplied with or without a charging basket. Rodhandling equipment for longhole drilling is available. The jumbo is supplied with Bever Control computer system with a level of automation, logging facilities and m.w.d. to suit the customer’s requirements.
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All-new hydraulic wheel jumbo features high capacity HD210 drifter with a new dual damper mechanism attains the extremely highly drilling performance and prolongs the service life of drilling tools.
Experience how smooth and speedy drilling can be.
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Our Long Tom rigs have been around for over twenty years, and are still in demand due to their simplicity and cost effectiveness. Designed to alleviate the negative aspects of hand held drilling and to improve drilling productivity.
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Two-Boom Hydraulic Jumbo MTI-2SB:
DRIFT RUNNER - MTI-2SB
The MTI SB series two-boom Hydraulic rig is designed for drilling vertical, horizontal, and angled holes in under ground production headings. It features two hydraulic percussion drifters, and can drive headings 24'-6" by 18' - 0" (7.5 m by 5.5 m).
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Oldenburg Cannon's line of rock drills, drill jumbos, and roof bolters have earned a reputation for simplicity of use, rugged reliability, and lowest cost per meter drilled.
Jumbos are configured in double and single boom set-ups, with enclosed or open cabs. Each customer order is engineered to meet the needs of the mine plan.
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Terex® MK65 Jumbo Drills
The MK65HE is an electric drill, diesel tram, rubber tired, two boom Jumbo designed to drill drifting holes, crosscut holes, bench holes and rockbolt holes.
SPECIFICATIONS MK65 JUMBO DRILL
Maximum hole depth: 12' 5" (3.81m)
Boom face coverage height: 21.25' (6.48 m)
Boom face coverage width: 35' (10.67 m)
Maximum tram speed: 6 mph (9.60 kph)
Length (depending on feed): 43' (13.15 m)
Width: 7' (2.13 m)
Overall height - Tramming: 8' (2.44 m) w/canopy
Overall height - Drilling: 11' (3.35 m) w/canopy
Maximum gradeability: 35%
Ground clearance: 1.25' (.38 m)
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Track-mounted DH-DC2 (BTRK 2) drill jumbo
The track-mounted DH-DC2 (BTRK 2) drill jumbo with two telescopic drill booms is intended as a universal machine for high-performance drivages in medium to large-section roadways. The crawler base also allows the machine to operate on steep gradients.
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Atlas Copco Boomer is a range of high-capacity drill rigs providing the best overall economy, production capacity and well-proven reliability. The Boomer range can meet all your demands from 6 to 206 m2 coverage area. The unique Atlas Copco boom system offers outstanding flexibility and precision to ensure straight-hole drilling performance in high-quality tunnelling and drifting for mine development and production. An extensive range of rock drills is available from 16 kW up to 30 kW impact power.
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Tunnel boring machines, Tunneling equipment
