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An Auger Boring Machine (ABM) is used to bore horizontally through soil or rock with a cutting head and auger. The majority of ABMs are used to install pipe casing under railroads, highways, airport runways, creeks or any area of ground that cannot be open cut or disturbed in any way.
There are many types of cutting attachments for this machine. They range from Backhoe Teeth cutters for cutting through soil to the Robbins Small Boring Unit for boring hard rock.
Initially the ABM is set up in the starting pit on a predetermined length of track. A backing plate, usually steel or reinforced concrete block, is installed in the wall opposite of the boring to withstand the thrust exerted by the boring machine. The machine bores through the earth with a cutting head and the jacking force is provided by the hydraulic thrust. The pipe casing and auger sections are added as the machine advances. Spoil is removed from the auger through the casing to a door located on the side of the machine.
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Double - or Telescopic - Shields unite the principles of the Gripper and the Single Shield TBM, enabling fast excavation even in varying rock formations.
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A Double Shield TBM consists of a rotating cutterhead mounted to the cutterhead support, followed by three shields: a telescopic shield (a smaller diameter inner shield which slides within the larger outer shield), a gripper shield and a tail shield.
In normal operation ("double shield mode"), the gripper shoes are energized, pushing against the tunnel walls to react the boring forces. The main propel cylinders are then extended to push the cutterhead support and cutterhead forward. The rotating cutterhead cuts the rock. The telescopic shield extends as the machine advances keeping everything in the machine under cover and protected from the ground surrounding it.
The gripper shield remains stationary during boring. A segment erector is fixed to the gripper shield allowing pre-cast concrete tunnel lining segments to be erected while the machine is boring. The segments are erected within the safety of the tail shield. It is the Double Shield's ability to erect the tunnel lining simultaneously with boring that allows it to achieve such high performance rates. The completely enclosed shielded design provides the safe working environment.
If the ground becomes too weak to support the gripper shoe pressure, the machine thrust must be reacted another way. In this situation, the machine can be operated in "single shield mode". Auxiliary thrust cylinders are located in the gripper shield. In single shield mode they transfer the thrust from the gripper shield to the tunnel lining. Since the thrust is transferred to the tunnel lining, it is not possible to erect the lining simultaneously with boring. In the single shield mode, tunnel boring and tunnel lining erection are sequential operations.
Regardless of the operating mode, working crews remain protected within the shields. Robbins Double Shield TBMs are capable of safely excavating a wide range of geologic conditions on a project. Our Double Shield TBMs are manufactured to suit your project requirements, in diameters from 1.6 m to 15 m (5 to 50 ft).
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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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Earth Pressure Balance Machines (EPBM)
EPBMs are used for high powered pipe jacking with precise control of earth pressure via operator control of the cutterhead with pressure sensors, jacking speed, screw conveyor operation and foam and bentonite slurry additive system for conditioning of spoils. Akkerman manufactures EPBMs for installation of pipe in the 96"-168" OD range.
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Herrenknecht Earth Pressure Balance (EPB) Shields are in their element in soft ground. Cohesive and incohesive soils with high clay or silt content and low water permeability provide the ideal conditions for EPB tunnelling.
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If the geology of your tunnel ranges from soft soils to weathered rock, then a Robbins Earth Pressure Balance Machine (EPBM) is the correct technical solution for your project. This is particularly true when your project is located in an urban environment and ground surface subsidence cannot be tolerated.
EPBMs are utilized in the construction of rail tunnels, metropolitan subway systems, highway tunnels, and other projects where the tunnel will be constructed either partly or completely in soft soil beneath the water table.
Robbins has integrated over 50 years of TBM design and jobsite experience into our EPBMs. Nobody has a wider range of experience designing innovative machinery to cope with difficult underground conditions. Our engineers will tailor your EPBM to handle the specific challenges of your project. From "Smooth Flow" cutterheads that reduce friction to super-reliable sealing systems and Variable Frequency Cutterhead Drives, Robbins has taken the traditional EPB design to the next level.
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Earth pressure balance tunnel boring machines
Historically, EPBs were developed in order to do away with the mucking system and the reprocessing of boring slurry. To do this, the soil must ideally consist of fine elements (clay and silt) and natural water. This type of mix is rare, which is why foams were developed.
Basic principle
The earth pressure balance tunnel boring machine or EPB consists of a cutting chamber located behind the cutterhead. This chamber is used to mix the soil + water foam. It is maintained under pressure by the mucking system. The system consists of a screw conveyor whose speed is controlled so that constant pressure inside the chamber is guaranteed. The material exits the screw conveyor via a hatch that can be closed when the TBM is shut down. The material is then removed by a belt conveyor and/or train cars circulating in the tunnel.
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Charging rig
AMV has several versions and sizes of charging platforms, all acording to customers demand. Normally the charging equipment is build upon lorry trucks with four hydraulic support legs, between two and four charging lines and a working platform adapted to the coverage area. As a standard, the machine is equipped with compressor, el-hydraulic power unit and belonging cable reel / cable for external electric connection. All hydraulic functions can also be operated from the pump mounted on the chassis pto.
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P1 Emulsion Loader Features
Self-leveling telescopic manlift boom with remote controls in man basket.
The emulsion charging system reduces the danger associated with the transport, storage and handling of explosives. Emulsion is non-explosive until charged into blast hole.
Articulated heavy-duty frames made to withstand the high impact and torsional stress associated with mining application, frames come with a five-year unlimited guarantee
Easy access to all service points.
Excellent service and parts back-up worldwide.
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Rocmec systems for anfo charging
GIA Industri AB and Dyno Nobel Europe have signed an agreement regarding the Dyno Nobel Rocmec ANFO Charging Equipment program and Rocmec Scaling Machines. The purpose of the agreement is to further strengthen the market with high quality equipment utilising GIA´s mechanical skills and Dyno Nobel´s large know-how regarding explosives and charging technique. Both organisations believe this will benefit our customers in the mining and construction industry.
Enough explosives for an entire charging cycle
The Rocmec DC is equipped with the ANOL CC – Nitro Nobel´s latest compressed air charger. The charger comes in two sizes of 500 or 1000 litres volume respectively. And the compact design allows either size to be carried by the smallest truck. If required, the Rocmec DC can be fitted with an additional charger for e.g. contour explosives. ANOLUP, equipment for filling up the charger with Anfo is an option.
Hose pusher with 4-wheel drive
Approximate positioning over the drill hole is executed by the boom. For precision positioning, the hose pusher can be angled ± 45° laterally and ± 20° longitudinally.
The hose feed uses four drive wheels for minimum wear and best friction. Contact pressure is automatically adjusted in order to ensure minimum wear. The feed is fixed at maximum speed while retraction speed can be selected by the operator.
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AC-3 Anfo Charger
The Mine-Mate™ AC-3 is a safe, reliable and cost effective solution for quality explosives charging of bulk ANFO in underground trackless mines.
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Normet has designed a complete range of underground explosive chargers, Charmecs, which meet the need of evermore demanding charging processes.
Today, all high production underground operations use bulk explosives: ANFO, emulsions or water gels. To maximize the benefits of bulk materials, the charging processes must be properly mechanized. The equipment has to be safe and reliable, meeting the highest possible productivity and quality requirements of the industry – whether for face charging with horizontal holes or for production charging with up-hand and/or down-hand holes.
The technology used in modern emulsion and water gel charging processes sensitizes the explosive on the charging unit. As authorities usually regard such units as explosives factories, Normet has developed its charging concepts in close cooperation with explosives manufacturers.
Normet Charmecs are built to improve safety and productivity in underground blasting, contributing to high quality and cost-effective bulk explosive charging processes. And they offer a consistently high resale value and low lifetime costs.
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Oldenburg brand UV-11 ANFO trucks provide maximum boom reach that supports 3 heading applications.
Our ANFO trucks are purpose-built and designed to meet the rugged environments of underground mining.
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RDH ANFOMASTER –ANFOLOADER
Engine: Deutz F6L914
Transmission: Clark 20,000 Series
Carrier: RDH 150 Series
Axles: Ford D45N, D65
Electrical: 24 volt
Tank Capacities: 500, 750, 1000 lbs
Dual Tank Option: 2— 1000 lbs tanks
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For use in solid rock, the principle of the gripper is both the most simple and most effective technique. The single gripper machine braces itself against the rock using two gripper plates. Then, hydraulic cylinders push the cutterhead into the tunnel face at high pressure, grinding it with cutter rings. Double gripper machines work according to the same principle, using four hydraulically operated gripper plates.
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A Robbins Main Beam TBM is complex in its design, yet relatively simple in concept. The front of the TBM is a rotating cutterhead that matches the diameter of the tunnel. The cutterhead holds disc cutters (ranging from 11" to 20" in diameter) which are positioned for optimal boring of the given rock type. As the cutterhead turns, hydraulic propel cylinders push the cutters into the rock. The transfer of this high thrust through the rolling disc cutters creates fractures in the rock causing chips to break away from the tunnel face. A unique floating gripper system pushes on the sidewalls and is locked in place while the propel cylinders extend, allowing the main beam to advance the TBM. The machine can be continuously steered while gripper shoes push on the sidewalls to react the machine's forward thrust. Buckets in the rotating cutterhead scoop up and deposit the muck on to a belt conveyor inside the main beam. The muck is then transferred to the rear of the machine for removal from the tunnel. At the end of a stroke the rear legs of the machine are lowered, the grippers and propel cylinders are retracted. The retraction of the propel cylinders repositions the gripper assembly for the next boring cycle. The grippers are extended, the rear legs lifted, and boring begins again.
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This type of boring machine is suitable for driving in stable rock and is used for the excavation of traffic tunnels (road and rail), supply tunnels (water, gas and electricity), pressure water utility tunnels for hydroelectric plants, tunnels for cable cars high in the mountains, tunnels for geological investigations and other special applications.
The main elements in the construction of the open tunnel boring machine are the cutter head with its associated drive housing, the support construction (the so-called gripper) and the advance mechanism.
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The Guided Boring method (also know as pilot tube microtunneling) installs small diameter pipes with grade and alignment precision. The pipe installation involves a three-step process where launch and reception shafts are strategically located to minimize surface disruption. Three robust jacking frame configurations are available to meet contractor's needs. Akkerman GBMs are used in conjunction with a theodolite guidance system to provide accurate pipe installation. Our GBM is extremely versatile and our customers continually surprise us with new applications. Akkerman manufactures GBMs for installation of pipe in the 4" - 48" OD range in displaceable soil under 50 blow count.
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Drift Runner MTI - 1SB
The MTI SB Series single-boom Hydraulic rig is designed for drilling vertical, horizontal, and angled holes in underground production headings.
Drift Runner MTI - 2SB
The MTI SB series two-boom Hydraulic rig is designed for drilling vertical, horizontal, and angled holes in underground production headings.
Vein Runner MTI - 1XSB
The MTI XSB Series single-boom hydraulic rig is designed for drilling vertical, horizontal, and angled holes in underground production headings.
Vein Runner LONGHOLE
Hydraulic center articulated four-wheel drive unit for long-hole drilling in underground mines. It is designed for vertical plane rings, fans and rings.
Montabert HC
1964/1991 : more than 25 years of creativity and innovation. An unequalled experience in hydraulic drilling technique is now applied to the hydraulic drifters.
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The DRILLMASTER 150 series was designed and manufactured to meet the
toughest mining environments. Featuring a Clark power shift transmission with 3 forward and 3 reverse gears allowing the drill rig to travel the mine with ease.
It is a completely equipped, high capacity drill rig for small sized tunnels and
mine production.
For ease of maintenance and repair the DRILLMASTER 150 series was
designed with the mechanic in mind. The design provides for easy access and removal of all components and hydraulic pumps.
The unit is fitted with RDH'S own unique Drill Control Manifold which features some of the newest hydraulic technology available.
The DRILLMASTER 150 series is a self contained drilling rig with an onboard
compressor and air mist drilling system.
Featuring a solid frame, unlike other single boom jumbos that lack in stability and are unable to operate on uneven surfaces or conditions.
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The DRILLMASTER 100 Series was designed and manufactured to meet the toughest mining environments. Featuring a Clark Power Shift transmission with 3 forward and 3 reverse gears this jumbo travels the mine with ease. Boasting an overall width of only 1321 mm it is capable of drilling in narrow vein headings as well as large headings due to its boom coverage.
For ease of maintenance and repair the DRILLMASTER 100 Series was designed with the mechanic in mind, providing easy access and removal of all components.
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Pantofore, manually operated drilling jumbos
Robodrill manufactures on request new Pantofore Jumbos.These Jumbos integrate following :
- Standard available carriers or special design
- BUC universal drilling booms
- MONTABERT drills, feeds and regulation system
- Manual or Semi Automatic drilling controls.
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Robofore, fully computerized drilling jumbos
Robodrill manufactures on request new multiple boom Robofore Jumbos.Our Robofore integrates following :
- CAT 980F Carrier (Alt. : Carrier - Heavy Construction Type Wheel Loader)
- BUPEC robotic drilling booms
- HC107 MONTABERT drills
- MONTABERT feed and drilling regulation system
- MONTABERT computerized drilling system.
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Rock Drilling Jumbo Introduction
Among the development and research of the products, Sunward Intelligent independently researches and develops the key technologies of the control system, hydraulic control system and special mechanism of hydraulic rock drilling jumbo, which reaches the advanced level in the world. As the latest product in China, it has been included in the National Construction Machinery “15” Development Direction List. In the past, China relied on imports totally for this product, and this project effectively breaks the situation that the imported products dominate the market in the field, meanwhile it is of great significance to promote national development of large-scale construction machinery and improve technical tunnel excavation of China.
Rock Drilling JumboFeatures
·Telescopiform structure and lifting operator's cab. Ample space for loader to pass for discharging that minimize additional workload.
·High positioning accuracy, high drilling speed(up to 1.5-1.8m/min). less drilling bit wear.
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Self-propelled Drilling Truck is a one working station, one extension arm, for drilling shot holes at underground headings of methane-free mines that mine non-ferrous metals ores and/or mineral raw materials.
The working system of the drilling rig is equipped with telescope extension arm of RWP type and telescope drilling frame with a hammer hydraulic drill.
Drilling rig is equipped with a cabin that ensures protection for the operator seating there; the protection against collapse during vertical stroke with the energy of 60 kJ.
Good stability and relevant power transmission system enables the use of the said machine to exploit deposits at headings with the longitudinal grade of (in the traffic direction) to 15° and at headings with across grades to 5°.
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Track-mounted DH-DC1 (BTRK) 1 drill jumbo
The track-mounted DH-DC1 (BTRK 1) drill jumbo with telescopic drill boom is intended as a universal machine for high-performance drivages in medium 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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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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Tunnel boring machines, Tunneling equipment
