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OUR EQUIPMENT SYSTEMS

Since inception, Akkerman has grown with the evolution of industry demands. We offer guided boring, microtunneling, pipe jacking and tunneling, and earth pressure balance systems to address each project’s ground conditions, pipe specifications and complexities. Our equipment matches common pipe diameters from 4-inches through 14-feet. When we present equipment solutions, we include everything you need to tackle the entire installation along with versatility packages to keep your equipment relevant to industry requisites project after project. Learn more by expanding each section below.

Guided Boring Systems

GUIDED BORING SYSTEMS

Guided Boring Machine (GBM) systems are the leading solution for accurate and extended drive lengths in soft ground to rock geology for 4-48-in. OD pipe and larger diameters with the guided auger boring application. GBM jacking frames connect with a host of pipe increase tooling, skid extensions and shaft adapters for versatility on a multitude of pilot tube projects. Our GBM systems are comprehensive and feature robust and intelligent design, adaptable functionality and sensible ease of use features.

GUIDED BORING OVERVIEW

  • Most suitable for Displaceable N Value <50 soils and Non-Displaceable N Value >50 with select tooling
  • Drive lengths within a 1/4-in. accuracy up to 500-lf.+
  • Methods: Guided Boring Three Step Method, Guided Steel Casing, Guided Auger Boring, Guidance for Pipe Ramming, Utility Pullback Installations, Pipe Roofing
  • Longer drive potential in ideal ground conditions - over 600-lf.+ pilot tube installations have been achieved
  • Quick set-up
  • Small footprint
  • Common types of pipe: VCP, RCP, CCFRPM, PCP, steel casing, PVC
  • Active theodolite guidance system
  • Auger/dirt bucket soil management

GBM technology has significantly advanced since its introduction in 2001, and we continue to diversify our offerings to exceed contractor expectations. Our newest pipe increase tooling, the Guide Rod Swivel (GRS-50) and the Rock Boring Unit (RBU) excavate rock to precisely install up to 42-in. outside diameter pipe. Contractors can now harness the torque and jacking force of the GBM 4800 Series Jacking Frame to install steel casing on projects with or without space constraints when paired with the High Torque Casing Adapter or Augering Adapter Assembly.

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Guided auger boring has become one of the most common applications for guided boring systems in North America, and its utilization has positively impacted the auger boring market. Guided auger boring is a cost effective method of accurately installing pilot tubes, followed by steel casing installation with an auger bore machine to ensure bore accuracy, expedite installations, facilitate longer lengths, avert down time and realize project savings.

REASONS TO GUIDE YOUR AUGER BORING MACHINE

  • Improved accuracy - within a 1/4-in./300-lf. versus 36-in./300-lf. deviation with an unguided bore
  • Longer drive potential in ideal ground conditions - over 600-lf.+ pilot tube installations have been achieved
  • Smaller casing sizes = cost savings
  • Faster installation
  • Find obstacles before they find you!

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Microtunneling Systems

MICROTUNNELING SYSTEMS

Microtunnel Boring Machines (MTBMs) install gravity flow pipelines that require precise line and grade in poor soil, areas with shallow water tables, environmentally sensitive or unstable ground conditions. Microtunneling is a remote controlled, continuously supported pipe jacking method. Standard center drive and face access, peripheral drive MTBMs are sized in the 30-114-in. OD range. Soil excavation takes place by infusing the soil with slurry at the face of the bore and cuttings are forced into slurry inlet holes in the MTBM’s crushing cone for circulation to and from a separation plant through a closed system. A complete slurry microtunneling system is commonly comprised of a pipe specific MTBM, control container, guidance system, remote hydraulic power pack, keyhole jacking frame, a series of pumps, water cooling tank, slurry and additional lines, and a slurry separation plant. The launch shaft is outfitted with a pit seal to prevent shaft flooding and a project specific thrust block to distribute jacking force. Microtunneling operations are managed by an operator in an above ground control container alongside of the shaft.

MICROTUNNELING OVERVIEW

  • Most suitable for saturated and flowing materials and pressurized soil under the water table, minimizes ground surface settlement
  • Drive lengths up to 1,000-lf.+
  • Two types of MTBMs - Center drive MTBMs and Face Access, Peripheral Drive MTBMs for extended lengths to perform tooling changes
  • MTBMs are remotely controlled
  • Soil excavation takes place by infusing the soil with slurry at the face of the bore
  • Common types of pipe: VCP, RCP, CCFRPM, FRP, PCP, steel casing
  • Active laser guidance system
  • Slurry separation equipment for soil management

Center drive Microtunnel Boring Machines (MTBMs) in standard sizes of 30 - 74-in. OD, accurately install pipe in virtually any ground condition, allowing for operation in high levels of ground water. MTBMs feature high pressure jetting nozzles, an articulated steering joint with three-point steering control, and hydraulically activated dirt wings to minimize MTBM roll. The guidance system relays all critical operation data to the control container using proprietary control software programs. Additional MTBM attributes include a live, one-way audio system and camera allowing for system monitoring during operation, gas detector and submersible pump. MTBMs can be outfitted with increase kits for adaptability. The soft ground and mixed ground cutter heads and crushing cones are hard faced to withstand wear. Cutter heads can be customized for specific ground conditions.

Face access, peripheral drive Microtunnel Boring Machines (MTBMs) are available in standard sizes of 72 - 114 - in. OD to precisely complete extended and curved tunnels with exceptional drive and cutting torque. This new generation of MTBMs enables face access to replace cutter head tooling to tackle the complex alignments that our industry demands. The peripheral drive, face access MTBM family features an onboard electric over hydraulic power pack for cutter head drive with low, medium, and high torque modes for accurate control in changeable geology. Back-loaded tooling mounts on the cutter head make access and replacement of worn tooling a simple process without the need for a planned maintenance intervention. Soft ground, mixed ground and rock cutter heads and crushing cones are hard faced to withstand wear. Cutter heads are customized for specific ground conditions.
*Extended and curved alignments are achieved with the use of the AZ100 Total Guidance System.

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Tunnel Boring Machines

TUNNEL BORING MACHINES

Tunnel Boring Machines (TBMs) are used to install 48-93-in. OD jacking pipe and are interiorly controlled by an operator. TBMs excavate soil at the face of the bore when hydraulic motors rotate the inner drum, the cutter head excavates and soil is transported via conveyor and haul unit for disposal from the launch shaft. The pipe laser in the launch shaft projects a laser point on the cutter face for the operator to monitor and make steering corrections as necessary. The all-in-one Tunnel Boring System easily adapts to any jacking pipe with an appropriately sized TBM, yoke and skid sections. A complete Tunnel Boring System is comprised of a TBM, pump unit, yoke, skid, haul unit, conveyor, pipe laser and often a bentonite pump.

TUNNEL BORING SYSTEM OVERVIEW

  • Most suitable for ground conditions allowing for personnel entry including sand, medium to stiff clay, dry or dewatered geology, weathered rock in non-pressurized ground water conditions
  • Drive lengths up to 1,000-lf.+
  • Common types of pipe: RCP, CCFRPM, FRP, PCP, steel casing pipe jacking applications and liner plate, ring beam and lagging tunnel building applications
  • Passive laser guidance system
  • Conveyor and haul unit system soil management

Series II Tunnel Boring Machines (TBMs) consist of eight TBM models with common ease of operating controls. The Series II TBM has a sealed steering joint that allows for bidirectional, full articulation at the face of the bore and a high capacity main bearing. Its two-speed drive motors operate in either low-speed/high-torque or high-speed/low-torque modes. This functionality allows operators to precisely tailor cutting speeds and torque in varying geology for optimal productivity. The operator controls steering, maintains line and grade and monitors the soil removal process from an interior control station. As soil is excavated, dirt paddles propel it onto the belt or screw conveyor for transport to the haul unit. Carbide single bar, quad bar cutter heads come standard with a TBM purchase and can be changed underground as necessary. Mixed-ground disc cutter head for high compressive strength geology, closed face cutter heads for unstable ground, sand shelves for loose unstable soil or custom cutter heads are also available.

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Excavator Boring Shields

EXCAVATOR BORING SHIELDS

Excavator Boring Shields (EBS) are used to install 100-168-in. OD jacking pipe and are interiorly controlled by an operator. An Excavator Boring Shield system excavates soil with a backhoe excavator at the face of the bore and and soil is transported via conveyor and haul unit for disposal from the launch shaft. Bore accuracy is controlled with a pipe laser in the launch shaft which projects a laser point on the cutter face for the operator to monitor and make steering corrections as necessary. An Excavator Boring Shield system contains a boring shield with excavator, conveyor, haul unit, power pack or pump unit, pipe laser and jacking frame. The EX50 Excavator is controlled with a joy stick and foot controls, and removes soil and obstacles at the face of the bore. Soil is excavated with the EX50 Excavator backhoe claw and transported by a belt conveyor to a large capacity haul unit for removal from the launch shaft. Boring Shields can be equipped with closeable, hydraulic doors to prevent subsidence from entering the EBS interior.

EXCAVATOR BORING SHIELD SYSTEM OVERVIEW

  • Most suitable for ground conditions allowing for personnel entry including sand, medium to stiff clay, dry or dewatered geology, weathered rock in non-pressurized ground water conditions
  • Drive lengths up to 1,000-lf.+
  • Access to face allows for obstruction removal
  • Low cost of operation
  • Simple design
  • Common types of pipe: RCP, CCFRPM, FRP, PCP, steel casing pipe jacking applications and liner plate, ring beam and lagging tunnel building applications
  • Passive laser guidance system
  • Conveyor and haul unit system soil management

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Earth Pressure Balance Systems

EARTH PRESSURE BALANCE SYSTEMS

Earth Pressure Balance Machine (EPBM) systems are complex in design and performance and are custom built to suit project parameters. Earth Pressure Balance Machine (EPBMs) Systems install pipe by pipe jacking or segment erecting methods. EPBMs excavate soil while balancing machine and soil pressures to minimize ground settlement. Soil from the EPBM cutter chamber is injected with foam and slurry to balance the face pressure and then removed through screw conveyor and haul unit.

EARTH PRESSURE BALANCE SYSTEM OVERVIEW

  • Most suitable for saturated and flowing materials, foam injection is used to stabilize ground
  • Drive lengths up to 1,000-lf.+
  • EPBM systems are customized for each project
  • System monitors and maintains earth pressures by balancing machine advancement and excavation rate
  • Common types of jacking pipe: RCP, concrete segments
  • Active laser guidance system
  • Auger and haul unit system soil management

Scroll through our earth pressure balance system image gallery to learn more.