Microtunnelling

Microtunnelling is a process that uses a remotely controlled Microtunnel Boring Machine (MTBM) combined with the pipe jacking technique to directly install product pipelines underground in a single pass.

Tunnelling has been a core activity since the company’s formation. In the last five years we have constructed more than 40 kilometres of tunnels, headings and pipejacks. We  retain our expertise in traditional tunnelling methods for short drives, temporary works or specific site conditions but most of our tunnelling is now carried out by mechanised means.

We have made major investments in tunnel boring machines and remote controlled pipejacking systems that offer greater efficiencies and safer environments for operatives. We have range of tunnelling machines suitable for pre-cast concrete segmental tunnel linings, enabling us to deliver mechanised solutions for a full range of ground conditions, with tunnel diameters from 600mm upwards.

The advantages compared to open trench construction are clear:

• a reduction of earth movement to a minimum
• consideration of residents and the environment
• lowering of the ground water is unnecessary
• minimal influence on traffic
• Less disposal
• Minimum impact on the public and businesses

Our fleet composes mostly of Herrenknecht full-faced slurry microtunnelling machines ranging from 600mm to 1800mm diameter equipped for all ground conditions including rock.

“With regard to excellence, it is not enough to know, but we must try to
have and use it”.
Aristotle, Nichomachean Ethics Greek critic, philosopher, physicist & zoologist (384 BC - 322 BC)