From the smallest to the largest, most complex projects, all tunnels have their individual challenges. We meet those challenges by combining knowledge of the ground with design, visualisation, and construction technologies that are right for the job.
Through years of serving clients according to these simple but essential principles, we have delivered some of the most challenging tunneling projects ever undertaken. We've won awards for innovation and engineering excellence, and in several circumstances, accomplished what others said could not be done.
We tailor our tunnel engineering knowledge to the issues that our clients face. While the ground may not know whether water, vehicles, or trains are being conveyed through a tunnel, our clients do. We offer our tunnel engineering services within a client-based focus.
Today, we continue to be involved in the development of the most prestigious tunnel projects including:
- Rail, metro and light rapid transit
- Water and wastewater
- Utility tunnels
Our tunnelling capability is built on over 100 years of experience. This has equipped us with the design expertise and practical understanding needed to bring our client’s projects from concept to final delivery, whatever the type:
- Bored tunnels in hard rock or soft ground
- Tunnel boring machines
- Segmental lining
- Sprayed concrete lining (SCL or NATM)
- Drill and blast tunnel excavation
- Cut-and-cover tunnels
- Immersed tubes
- Trenchless methods, micro-tunnelling, pipejacking and directional drilling
- Shaft sinking in soft ground or rock
- Refurbishment of tunnels