Tenbusch Inc.

Tenbusch Inc.

- Tunneling & Pipe Jacking Systems

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Tenbusch Inc. designs, fabricates, and manufactures custom tunneling and pipe jacking systems for underground construction applications. From desktop conception, to the heavy duty steel equipment delivered at the jobsite, Tenbusch produces high quality tunneling and pipe jacking systems. Based on customer needs and requirements, Tenbusch can supply either individual components or a complete integrated equipment system.

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Tunneling shields are essential for basic hand tunneling - whether the tunneling process is conventional pipe jacking or tunneling with liner plate. Tunneling and pipe jacking shields provide several benefits to the process:

  • Shields and protects the workers
  • Provides steering of the pipeline insertion (mechanical or hydraulic powered)
  • Provides a mounting for 'sand shelves'
  • Provides an anchor for an excavator
  • Provides a base for a conveyor belt
  • Provides a base for hydraulic controls
  • Allows for excavation in the front of the shield to progress while liner plate is assembled at the rear of the shield (for tunneling with liner plate installations).

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Tenbusch Inc. designs and fabricates custom tunneling and pipe jacking shield excavators. Mechanized excavation at the face of the shield greatly improves productivity, which can reduce the overall cost of the tunneling project. Tunnel shield excavators are designed and built for maximum range of motion and are able to reach and excavate at any location on the face of the tunnel. As with all Tenbusch equipment, shield excavators are custom built according to the customer's specifications and job site conditions. Shield excavators are an option for both tunneling processes:

  • Conventional pipe jacking
  • Tunneling for liner plate (or beam and lagging).

An added benefit of purchasing a shield excavator is that the excavator can be transferred to other shields for other tunneling or pipe jacking projects.

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Tenbusch Inc. designs and fabricates custom tunneling and pipe jacking shield conveyors. A mechanized conveyor within the shield transports spoil from the floor of the tunnel face and conveys it up and into the muck cart. Conveyors improve productivity, and can reduce the overall cost of the tunneling project. Shield conveyors are custom built for the customer's specific requirements and job site conditions. Shield conveyors are an option for both tunneling processes:

  • Conventional pipe jacking
  • Tunneling for liner plate (or beam and lagging).

An added benefit of purchasing a shield conveyor is that the conveyor can be transferred to other shields for other tunneling or pipe jacking projects.

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Tenbusch Inc. designs and manufactures custom spoil removal equipment for conventional pipe jacking and liner plate tunneling applications. Tenbusch track is designed with the following features:

  • Designed to be easily bolted together in the tunnel
  • Sized for maximum strength and rigidity
  • Kept as light as possible to make it easy for the workers to install.

A wheeled conveyor separate from the spoil bowl allows the bowl to be easily removed and dumped outside of the work pit. The bowl is designed to automatically dump when lifted by the appropriate hinged liftpoint only. A transport rack is provided for maximum utility. Quality design, function, and manufacture.

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Tenbusch Inc. designs and fabricates custom jacking frames for conventional pipe jacking applications. Standard features are as follows:

  • Provides required thrust to get the job done
  • Provides a balanced thrust to the pipe adapter
  • Heavy duty pipe adapter distributes insertion thrust evenly to the pipe
  • Pipe adapter guide plates center the pipe
  • Control center located on either side of track
  • Special cylinder porting keeps hydraulic hoses out of way.

Tenbusch Inc. also manufactures jacking equipment for box culverts and non-standard pipe shapes.

Experience with conventional pipe jacking and equipment fabrication allows Tenbusch Inc. to manufacture a custom solution that is competitive and delivered on time.

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Tenbusch Inc. designs and manufactures custom hydraulic power units (HPU's) for underground construction applications. Tenbusch HPU's are integral to the pipe jacking and tunneling processes, providing the following:

  • Power and thrust for shield/tunnel advancement
  • Hydraulic pressure for steering cylinders
  • Hydraulic power for the shield excavator and conveyor
  • Necessary hydraulic power to operate the lubrication system.

Tenbusch Inc. will work with your company to build the optimum hydraulic power unit that satisfies your most critical and demanding underground construction hydraulic power applications.

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Tenbusch Inc. designs and manufactures custom lubrication systems for mixing and pumping underground lubricants, such as bentonite and polymer solutions. Lubricants reduce the friction load on the shield and/or pipe surfaces. Overall power and thrust requirements are diminished as the friction loads are reduced. The lubricant systems are designed for maximum utility and ease of use and can be customized as needed. Tenbusch lubricant systems are designed to work off the secondary circuit of Tenbusch hydraulic power units.

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Backstops are a composite structure of steel and concrete designed to provide a 'thrust wall' for underground construction applications. Backstops are ideally suited to conventional pipe jacking operations where they provide the following functions:

  • Contribute significant mass for stabilizing thrust and jacking processes
  • Distribute the jacking forces more evenly to the surrounding soil
  • Reduce the deflection and drift of heavy equipment in thrust and jacking processes.

Another advantage of the backstop is that it is portable and easily transported from job to job.

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