Difference between Pipe Jacking and Micro Tunneling
Difference between Pipe Jacking and Micro Tunneling
Pipe Jacking Micro Tunneling
Pipe jacking is a general technique of the installation of pipes with a tunneling shield in front and the pipes are jacked from a jacking pit to a receiving pit. The tunneling shield for pipe jacking can be electrical and mechanical equipment for conducting the excavation work or it can be a manual shield for workers going inside the shield to carry out manual excavation. For microtunneling, it is a kind of pipe jacking of small sized non-man-entry pipes which are remotely controlled. Ingeneral, there are two common types of micro-tunneling machines:
(i) Pressurised slurry
Similar to the Pressurised slurry TBM, excavated material is transported from the excavation face to the surface suspended in a slurry.(ii) Auger machine
Excavated material is transported from the excavation face to the drive pit through a cased screw auger.
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