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Low carrier on tyres for transporting heavy load.
The specific application is for tunnel construction, transporting segments, mixer, and other services for the purpose. It is tipically supplied with two cabins (one per direction), hydraulic translaction in order to cope with deep slope, auto-levelling suspension.
Many different types as been made according to the specific need.
Other low carriers can be produced for any other purpose, as for bridge construction (transport of segments), steel plants and ship yard for instance.
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Robbins Small Boring Units (SBU-As)
The SBU-A is a small diameter rock cutting head (from 24"/600 mm to 72"/1.8 m) that can be used with any Auger Boring Machine (ABM) to excavate hard rock on drives less than 500 ft (150 m). The Robbins SBU-A has been proven on hundreds of jobs across the U.S. Over one hundred contractors in locations around the world have proven the SBU-A works better than any other method of excavating small diameter, hard rock bores.
Robbins Motorized Small Boring Units (SBU-Ms)
If you need to bore a small diameter tunnel in hard rock where line and grade are critical, Robbins offers Motorized Small Boring Units (SBU-Ms). These machines have been specifically designed for long bores (over 500 ft/150 m) with difficult ground conditions. They are offered in cutterhead diameters from 48"/1.2 m to 78"/2.0 m. If you are not familiar with SBU-As, we suggest you read about them before researching SBU-Ms.
Robbins Rockhead (SBU-RHSS or SBU-RHDS)
If line and grade are critical and you have a longer bore (over 1000 ft/300 m in length) for your next project, you should consider the Robbins Rockhead. The diameter range is available between 54" (1.35 m) and 78" (2.0 m). The Robbins Rockhead is a powerful mid-sized tunneling machine available in both Single Shield and Double Shield models.
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Microtunneling is the best pipe jacking method for wet and unstable ground conditions or contaminated soils. Microtunneling is generally defined as remotely controlled pipejacking (personnel-entry is not required) whereby the soils at the cutter face are controlled to maintain balance. Some examples of microtunneling applications are crossings under existing utilities, busy highways, railroads, levees, waterways and sensitive wetlands or shaft-to-shaft pipeline installation. An Akkerman microtunneling system is made up of several pieces of machinery that function together, controlled by an operator who monitors and controls the tunneling operations from a console inside a control container on the surface. Akkerman manufactures MTBMs for installation of pipe in the 30" -96" OD range.
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Worldwide, more than 600 Herrenknecht Utility Tunnelling Machines (Ø < 4.20m) excavate modern supply and disposal tunnels and renovate existing systems. Whether our project engineers can help our customers to implement a project successfully largely depends how well the machinery is adapted to the prevalent geological conditions (permeability and grain distribution). It is a good job that Herrenknecht is able to offer the entire range of Utility Machinery and collaborates with site teams to implement successful projects.
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WIRTH has been involved in tunneling and mining for over 100 years, producing the largest, most powerful machines in the world. But within the last 25 years the growing demand for trenchless technology as a means for installing underground utilities, has made WIRTH develop a range of equipment to provide trenchless solutions.
At WIRTH we believe that a combination of a high installed power & superior engineering means the user is on to a winning formula. Unlike large diameter TBMs which are made project specific, microtunneling machines are modular and can be adapted to suit a variation in ground conditions and product pipe sizes. This means that a contractor having a system is able to be versatile in the work that he can compete in by either increasing the diameter of his machine, or renting the head he requires for this project. Or maybe he just needs to change the configuration of the machine for use in a harder ground formation by getting a rock head for his existing machine.
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Fluid-supported Mixshields are specialists for multi-layered, complex geologies, particularly those with a high water content, and are a patented trademark of Herrenknecht. This functioning principle is particularly well-adapted to heterogeneous soils: Thanks to the center-free drive with the floating bearing of the cutting wheel and the modular structure of the machine, the operating mode can be altered to suit the soil conditions in the tunnel.
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Tunneling systems for mixed ground
Dual mode - two process technologies in one
As the term 'dual mode' indicates, two process technologies are combined in these machines.
Shield machines
These machines are externally similar to shield machines and combine the functional features of a hard-rock shield tunnel boring machine and, optionally, of a slurry shield or a hydroshield machine (Bentonair, slurry shield). They are always used when tunnels have to be driven alternately in stable and unstable sections.
New style machines
Dual-mode tunnel boring machines are still a new type of machines and have been developed to meet the requirements of complex projects in strongly varying geologies. Where conventional tunneling techniques had to be used formerly, these machines now open the way to lower-risk and lower-cost tunneling in difficult geological conditions
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Pipejacking Systems are used to hydraulically install underground pipelines within strict alignment and grade tolerances where personnel-entry (i.e. operator located inside the boring machine and/or on the haul cart) is permissible. Akkerman manufactures TBMs for installation of pipe in the 44 "-168" OD range.
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AQM 150
The AQM 150 is a powerful mid sized roadheader with a rugged compact design. It is designed for excavation of semi hard rock in tunnels and under ground mining applications.
Technical Data
Weight: approx. 35 t
Height: 1800 mm
Length: 8113 mm
Width Load Apron: 2000/2500/3000 mm
Cutter Motor: 150/175 kW
Hydraulic Power Pack Motor: 45 kW
Loader Motors: 2x22 kW
Crawler Track Motors: Hydraulic
Cutting Profile (with Standard extension):
Max Cutting Height: 4085 mm
Max Cutting Width: 5005 mm
Max Undercut: 180 mm
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AQM 50
The Antraquip model AQM 50 is a roadheader in the 13 ton weight class, with the worlds narrowest roadheader. It is ideally suited for tunneling and mining where only a very narrow machine fits.
Technical Data
Weight: approx. 13 t
Height: 1550 mm
Length: 6890 mm
Width Load Apron: 1600/2000/2500 mm
Cutter Motor: 30 kW / 41 kW
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AQM 100
The Antraquip model AQM 100 is a roadheader in the 25 ton weight class, which can be used in various applications within the tunneling and mining industries. They are commonly used for excavation of tunnels and in various underground mining applications.
Technical Data
Weight: approx. 27 t
Height: 1830 mm
Length: 8950 mm
Length (with belt conveyor): 13500 mm
Width Load Apron: 2000/2500/3000 mm
Cutter Motor: 110/132 kW
Hydraulic Power Pack Motor: 22 kW
Chain Conveyor/Loader Motors: 2x18 kW
Crawler Track Motors: 2x15 kW
Cutting Profile (with Standard extension):
Max Cutting Height: 4420 mm
Max Cutting Width: 5200 mm
Max Undercut: 180 mm
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AQM 200
The heavy duty AQM 200 roadheader is designed for applications with semi-hard to hard rock excavation. It is ideally suited for tunnel excavation as well as mining applications in coal, potash, phosphate, salt, gypsum, uranium and other minerals.
Technical Data
Weight: approx. 55-58 t
Height: 2500 mm
Length: 11700 mm
Width Load Apron: 5500 mm
Cutter Motor: 200 kW
Hydraulic Power Pack Motor: 70 kW
Loader Motors: 2x36 kW
Cutting Profile (with Standard extension):
Max Cutting Height: 5300 mm
Max Cutting Width: 7600 mm
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The Dosco Roadheader MK4 is a heavy duty, track mounted, single boom Roadheading machine designed to carry out mechanised preparatory excavation work in both mining and civil engineering applications.
The 96 tonne machine is designed to give greater strength and power to the well proven cutting boom principle. A powerful boom assembly with high arcing and lifting forces enables the machine to cut harder strata’s in roadways up to 5,300 mm high.
The machine is of sectionalised design and bolted construction for ease of maintenance and on-site dismantling and transportation.
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LH1300H a 58 tonne low height medium duty machine. Axial, transverse, telescopic single and two speed options
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Designed for development or production work, this powerful single boom 60 tonne machine is ideal for operating in areas of restricted height.
The LH1400 series has developed from the original LH1300H model and in-corporates greater cutting forces from a single or two speed boom assembly
Alternative axial or transverse cutting options can be specified to suit roadheading and production operations in medium to hard strata.
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The Dosco MD1100 Roadheader is a general duty, track mounted, single boom roadheading machine designed to carry out mechanised preparatory excavation work in both mining and civil engineering applications.
With options of Axial or Transverse Cutting Booms the 35 tonne MD1100 is a robust reliable machine capable of ecomonic excavations in strata up to 80Mpa strength strata.
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As a hybrid of the well proven MK2B and LH1300 series of machines with a combined fleet numbering 245 (102 Mk2B and 143 LH1300 produced to-date) the Dosco MK2BP Roadheader is a medium duty, track mounted, single boom Roadheading machine and has been specifically designed with an ultra low ground pressure of 1.13 kg/cm2. Capable of carrying out mechanised preparatory excavation work in extremely soft floor conditions for both mining and civil engineering applications. Such a low ground pressure will prevent the machine from sinking whilst providing excellent manoeuvrability.
The Mk 2BP incorporates the latest technology available for road-heading machinery.
Designed for development or production work, this powerful two speed boom machine is ideal for
operating in adverse floor conditions. This machine has been purposely designed with an ultra low
ground pressure of 1.11 kg/cm². Such a low ground pressure will prevent the machine from sinking
whilst still providing acceptable manoeuvrability.
High efficiency cutting including an ability to economically excavate hard rock is achieved through:
High cutting power, high arcing and lifting forces plus two speed cutter head design.
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SM130
High performance medium weight class tunnelling machine for rockhardness up to 80 MPa. With modular constructed system demands for reliable and efficient machine will be fullfilled.
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SM100
High performance lowest weight class tunnelling machine for rockhardness up to 65 MPa. The smallest IBS solution for highest demands.
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SM110
High performance small weight class tunnelling machine for rockharness up to 75 MPa. Basis for this development served the concept of the well known IBS roadheader SM130
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WIRTH supplies a range of roadheaders in different classes. All machines can be adapted to specific conditions. Standard options include roofbolting equipment, flameproof versions, transformers, remote control, dust control, airconditioned cabins, ventilation, and material transport. All roadheaders are standard equipped with a longitudinal cutterhead, but alternatively we can supply transversal cutterheads.
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Gradall mine scalers are engineered to provide the extra reach, extra boom movement and the extra prying power to make a difference.
- Two section telescoping boom is armed with high-pressure, load-sensing hydraulics, delivering the appropriate scaling power without wasting fuel.
- Boom movements can be carefully controlled using joystick controls built into the seating module.
- To handle the rigors of mine scaling, the rugged triangular boom design includes double rollers and a tilt mechanism located at the rear of the boom structure.
- The 4 x 2 wheeled carrier can be maneuvered and positioned using two pedals and a tilt steering column.
- The Gradall operator cab is designed for comfort and safety with tinted safety glass windows, heavy-duty windshield guard, skylight, acoustical lining, fresh air heater and defroster with filter and other standard advantages.
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Mechanization improves both the quality of scaling and the level of safety, productivity and effectiveness — not only of scaling work, but of the entire excavation process.
Normet offers a mobile mechanized scaling system: the Scamec 2000. This has evolved from successful scaler experience, hours of research and engineering work, and partnerships with mining and tunnelling customers around the world.
The Scamec 2000 scaler family comes in three interchangeable boom versions for optimum boom reach and coverage to fit the actual dimensions of the underground space. This reduces the need for repositioning and minimizes non-productive time.
Our Scamecs can be equipped with a hydraulic impact hammer for scaling in hard rock, or with a pick unit for primary scaling in soft and stratified rock and for secondary scaling in all underground excavations.
Normet Scamecs are easy to operate and provide high quality scaling for a safer work environment.
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Oldenburg scalers, ANFO trucks, and utility vehicles compliment the Oldenburg Cannon drills and bolters.
From entries as narrow as 4 meters to reaches in excess of 50 feet, our products provide advanced ergonomics, high throughput, and industry benchmarked availability.
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Shotcrete robots
AMV shotcrete robots are available in many different configurations. Common for all is that they are equipped with a piston type shotcrete
pump with high capacity and capable of handling all known shotcrete qualities, with or without fibre addition. The largest robot, shown above, can spray to a height of 17 meters and has a side reach of 13 meters.
The shotcrete pump has a pumping capacity of up to 25 m3 per hr.
An air-conditioned operator’s cabin can be supplied for most robots.
Scanning equipment is available. A computer controlled accelerator
addition system is available
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P1 Shotcreter Features
For maximum reach and coverage the DUX P1-SHOTCRETER is equipped with remote controlled robotic knuckle boom with extendable spray arm, all position spray head and liquid accelerator dosage pump (dry or wet) shotcrete system.
Standard P1-SHOTCRETER can spray concrete on drift up to 40 feet (12.2 meter) high. Optional booms with greater reach are available.
The shotcrete pump rests on a fork-lift device and can be easily detached. Forklift device can be used to carry loads of up to 2 tons.
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On-board compressor eliminates necessity of air piping
Compressed air is supplied from an on-board compressor eliminating the need for air piping to be laid in tunnel thus saving cost and labor.
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Today, the use of sprayed concrete in mines, tunnels and other civil engineering structures is an inseparable part of all successful, highly productive and safe operations. The trend is towards applications utilizing fully self-propelled mechanized/automated spraying systems that deliver high productivity, superior operator safety and outstanding quality.
Our mobile sprayers are the result of more than 40 years of accumulated experience in underground works and of close partnerships with tunnelling and mining customers across the globe.
We are also concerned with safety and productivity. All Spraymec models are available with an electro- or diesel-hydraulic configuration and an optional on-board compressor.
Normet has sold hundreds of sprayed concrete units worldwide – and, being highly durable, most are still in use!
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Tunnelling and Mining
The expertise summoned throughout the years is taken to its best to develop world class
tunnel and mining equipment designed to meet today’s demanding technical
circumstances. Both above and underground, when it comes to mining extraction or tunnel
construction, Putzmeister makes the job a little easier.
Concrete and Mortar Solutions
Putzmeister offers a great variety of the most advanced technology equipment for pumping,
spraying, placing and injecting concrete and fine mortar of the different types required in
underground constructions.
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Robbins Single Shield TBMs protect workers from broken rock until the tunnel lining can be safely installed. The body of the machine is enclosed in a shield that is marginally smaller than the diameter of the tunnel. The flat, low-profile cutterhead minimizes disturbance of the face as it bores, and prevents large blocks from collapsing and causing excessive boring stresses. The front of the TBM is a rotating cutterhead that matches the diameter of the tunnel. As the cutterhead turns, a ring of hydraulic cylinders provides forward thrust through shoes that push against the tunnel lining. The cutterhead holds disc cutters (ranging from 11" to 20" in diameter) positioned for optimal boring. The transfer of high thrust through the rolling disc cutters creates fractures in the rock, causing chips to break away from the face. Boring and lining installation are performed sequentially. To steer, cylinders orient the articulated cutterhead in the required direction.
Robbins Single Shield TBMs are available in diameters from 1.6 to 15 m (5 to 50 ft). All Single Shields are equipped with high-speed segment erectors for rapid tunnel lining installation. To steer the machine, the cutterhead is articulated. The short shield length enables a small turning radius and minimizes exposure to squeezing ground forces that could potentially trap the machine.
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Tunnel boring machines, Tunneling equipment
