Often referred to as Guided Thrust Boring or Micro Tunnelling.

Compact boring equipment operates from shafts or pits as small as 2.40mØ. Allen Watson designs, owns and operates the widest, most powerful and versatile range of guided auger boring systems for trenchless applications. With jacking forces from 85te to 155te, we provide total trenchless solutions for the installation of gravity pipes, cable ducts or simply where accuracy is paramount.

We are extensively using this as a safe and costeffective alternative to microtunnelling, timber headings and in many instances open cut.

Advantages
Accurate installations +/ 25mm over distances up to 100 metres between pits
Can operate from shafts as small as 2.40mØ
Ideal for gravity drainage pipes, cable ducts or accurate installations
Can install variety of pipe materials, such as clay, steel, PE, concrete or GRP
Dry method of installation unlike micro tunnelling does not generate slurry
Auger boring is unaffected by surface obstacles
No disruption to surface, buildings, road, river, rail or traffic
By boring underground the working area is confined to entry and exit points
Unlike micro tunnelling, Guided Auger can be retracted back to the working pit
Can be used to install pipes in changeable ground conditions
Auger boring is quick and in many cases has lower overall costs

Typical Applications
Steel pipes and ducts from 100mmØ up to 1016mmØ or drainage pipes from DN150 up to DN900.
Distances from 5 metres up to 100 metres have been successfully installed under railways, roads, rivers, airports, buildings, contaminated landfill sites and Sites of Special Scientific Interest (SSSI).
Crossings can be for water, oil, gas, electricity, sewerage, chemicals, communication ducts and outfalls.