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Micro tunnelling is used for constructing small tunnels. In most micro-tunneling operations the pipe is inserted from the entrance and pushed behind the machine. This process is often called “Pipe jacking”. As the machine advances, more tunnel liner is pushed from the entrance; thus, the speed of the advancing machine is controlled by the speed at which the pipe is inserted.
These small diameter tunnels make it impossible to have an operator inside the actual boring machine. Instead, the micro-tunnel boring machine (“MTBM”) must be operated remotely. This system is ideal for use in urban areas.
KEY advantages to Micro-Tunnelling/Pipe-Jacking Micro-Tunnelling and Pipe-jacking is reliable and cost-effective.

Key advantages include:

  • Minimal earth moving (only for launching & receiving shafts)
  • Absence of ground-water lowering (thus preventing dangerous settlements of building foundations and road services)
  • Optimal protection for people and nature
  • Minimal effect to traffic and pedestrian mobility above ground
  • Flexible driving alignment (i.e. curved or linear)
  • All-weather construction (thus allowing for rapid completion and meeting deadlines)
  • All ground-condition tunnelling (including clay, silt, sand, gravel, and limestone)