Microtunnelling

Microtunnelling is a process that uses a remotely controlled Microtunnel Boring Machine combined with the pipe jacking technique to directly install product pipelines underground in a single pass. This process avoids the need to have long stretches of open trench for pipe laying, which causes extreme disruption to the community. Product pipes of a variety of materials can be used, but typically consist of steel, concrete and GRP.

  • Minimal reinstatement
  • Inherent strength of lining
  • Smooth internal finish giving good flow characteristics
  • Minimal surface disruption
  • Less risk of settlement
  • Reduced requirement for utilities diversions in urban areas
  • No requirement for secondary lining
  • Considerably less joints than a segmental tunnel
  • Provision of invert channels in larger pipes to contain the dry weather flow of a sewer in a combined system
  • Significant reduction in social costs when compared to open cut trenching in urban areas
  • Reduced environmental disturbance


Perco works closely with its Microtunnelling partner, Iseki of Japan. For more information about microtunnelling, please contact Nick Sheehan.

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