Microtunneling
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Microtunneling
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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Microtunneling Control Container
Akkerman has the most advanced Information and Control System available. The ISO sized, climate controlled container houses the control console, power distribution, Motor Control Centers for slurry pump and MTBM drive motor, and a bulkhead panel for electrical and communication connections. All system controls are located for easy access by the operator. |
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Microtunneling Boring Machine (MTBM)
MTBMs operate as remote controlled slurry earth pressure balance machines and perform in soil conditions ranging from flowing unstable ground to hard rock. Akkerman MTBMs have a pressure balanced cutting chamber and slurry spoil removal to provide maximum control of the soil at the cutter face. They are electrically powered to give optimum efficiency and cutting torque, especially on long drives. MTBMs are available in sizes 30-96” OD with the addition of an increase kit. |
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Keyhole Jacking Frames
The MT860K keyhole jacking frame, designed to work with the SL60, SL72 and SL74 MTBMs, will operate out of a 16-20’ shaft. Features 800 tons of thrust capacity while using keyed locks on the thrust block to continuously advance the machine, Akkerman keyhole jacking frames are able to push a variety of pipe lengths. A winch pullback for the thrust plate and round and flat back shaft adapters are available. |
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Microtunneling Support
Akkerman offers a complete line of accessory equipment and for our products to allow our customers to be able to bid on a wide range of jobs and get the most out of their Akkerman equipment investment. Additionally, we maintain a large spare parts inventory to provide the fastest possible delivery of desired items. |
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