Microtunneling

AugerPro System - Pipe Jacking

Tunnel length:
Diameter:
Geology: 		Up to 300m
OD200 - OD1600
soft ground (sand, silts, clay), without any boulders
Features:
  • Low groundwater level 
  • Excavated soil is transported by auger train to the start shaft 
  • Push pipes directly after drilling

Slurry Systems - Pipe Jacking

Tunnel length:
Diameter:
Geology: 		1.000m and more
OD400 - OD4000
All conditions
Features:
  • Difficult soil with high levels of ground water
  • For very long distances and large diameters
  • Excavated spoil is mixed with water, transportation to the surface
  • Water and spoil get seperated, water maintains in the slurry circle
  • Four different modes, usability for different geologies
  • Additives or betonite are not required
mts Hybrid: Slurry systems - suitable for pipe jacking and segmental lining projects
If there is no possibility for building a rescue shaft > switch to segmental mode > finish tunnelling

EPB Systems - Pipe Jacking

Tunnel length:
Diameter:
Geology: 		1.000m and more
OD1200 - OD4000
Soft ground
Features:
  • Fine soils with low water permeability
  • For very long distances
  • Excavated soil gathers in the excavation chamber
  • Soil and advancing force build the support pressure
  • Excavated soil transported by screw conveyor out of the excavation chamber
  • By conveyor belts or lorries to the launching shaft
mts Hybrid:

EPB systems - suitable for pipe jacking and segmental lining projects
If there is no possibility for building a rescue shaft > switch to segmental mode > finish tunnelling

Hard Rock Systems - Pipe Jacking

Tunnel length:
Diamater:
Geology: 		1.000 m and more
DN 1200 - DN 4000
fractured and unfractured Rock
Features:
  • With a gripper station in stable ground conditions
  • Grip against the tunnel wall to move forward
  • In fractured rock > unstable tunnel walls supported by pipes or segments > Segmental Lining

Our microtunneling systems are easy to handle with our mts power pack container. Our laser guidance systems ensure high accuracies. You will obtain an overview of the main components at the following link: Components

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