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Business Overview
John Holland features Australia’s largest specialist in-house tunnelling business offering premier tunnelling expertise throughout Australia, New Zealand and Asia in the road, rail, water, wastewater and energy infrastructure markets.
John Holland’s Tunnelling business has experienced significant growth over recent years and is well positioned to consolidate current workload and achieve sustainable growth and performance going forward.
With the unprecedented demand for tunnelling expertise in the Australia and South East Asian region John Holland offers the most diverse range of tunnelling skills and capabilities in the road, rail, water and wastewater sectors. Our significant investment in specialist tunnelling plant and equipment provides the capability to work across a variety of operational areas, utilising our diverse range of skills.
Our capabilities
John Holland’s Tunnelling capabilities cover all types of tunnelling works. We are a leader in mechanised tunnelling using Roadheaders and Tunnel Boring Machines in all types of ground construction.
Tunnel Excavation
John Holland’s Tunnelling business is Australia’s most experienced soft ground tunnelling contractor and remains at the cutting edge of tunnelling technology having pioneered the first use of Earth Pressure Balanced (EPB) TBM’s, Slurry TBM’s and open face shield technology in Australia.
We are the only contractor in Australia with extensive experience in compressed air tunnelling and ground freezing techniques. We have significant experience and capabilities in the areas of;
- Roadheaders
- Drill and blast
- Shaft excavation
- Tunnel and shaft lining
Hard Rock Tunnelling
We have extensive experience in the use of hard rock TBMs, roadheaders and drill blast techniques. We were Australia’s first company to introduce a double shielded TBM and the first use of back loading TBM cutters, a major advancement in tunnel safety at the time.
We are the largest user of 300 kW roadheaders in the region and utilise state of the art Roadheader guidance technology to minimise overcut and mitigate wasted shotcrete / concrete backfill costs. Our integrated use of roadheaders on multiple workfaces ensures we achieve impressive production on excavation as well as ensuring the completed tunnel is ready for fit out.
Mixed Ground Construction
We have successfully adapted modern TBM technology to complex ground conditions. In the Northern Suburbs of Melbourne we have managed TBM’s in ground conditions ranging from high strength fresh basalt, Silurian mudstone and running sands under a high water table.
We have experience in the successful completion in challenging mixed face conditions comprising high strength granite boulders surrounded by decomposed granite through alluvial deposits and reclamation areas.
Our success in tunnelling in mixed ground conditions is based on our experience, knowledge and use of soft ground and hard rock TBM technology.
Our tunnelling business continues to successfully provide world class infrastructure to the road, rail, water and wastewater sectors. With the continuing trend throughout the world to co-locate energy and communications infrastructure underground we are well placed to support the expanding energy sector.
Establishing and maintaining effective partnerships with key clients, contractors and technology suppliers has contributed largely to the success of our business. We have on-going relationships with Melbourne Water and Yarra Valley Water to provide tunnel construction services for water and waste water infrastructure in Melbourne.
John Holland in partnership with Veolia Water has become the leading provider of desalination plants in Australia.
Capability Brochure - Tunnelling
Geographic spread
Our head office is based in Melbourne, Australia. We also have significant areas of operation covering Australia, New Zealand and Asia. Recent projects cover a broad area including Melbourne, Sydney, South East Queensland and Hong Kong.
Our contracting methods
Our business continues to deliver projects covering a broad range of project delivery mechanisms, including Public Private Partnerships (PPP), Design and Construct (D&C), Alliance and the more recent form of collaborative relationship known as Cost Reimbursable Performance Incentive or CRPI.
Our capacity
We deliver underground infrastructure on a broad scale ranging from two metre diameter pipe jacking operations to multi-billion dollar transport infrastructure.
Our capacity to provide specialist tunnelling plant and equipment is without peer in the region. Since 2006 we have procured eight specialist tunnel boring machines in a variety of sizes covering slurry, EPB, double shielded and hard rock technology.
Our staff
We achieve our goal of being an Employer of Choice by continually offering our staff unique and rewarding challenges without losing sight of the importance of work-life balance.
We provide staff with on-going personal development through training as well as offering the opportunity to work throughout Australia and internationally. The experience of our staff covers all types of underground construction.
The culture of our business
Safety is our number one priority in line with the John Holland Group’s vision of “No Harm”. Certainty of delivery is a key focus as we strive to deliver our clients requirements, on time and below budget. Our culture extends to satisfying all stakeholders including local governments, authorities and communities.
John Holland also features an industry leading record in safety. Our staff actively participates in the Passport to Safety Excellence Program reinforcing John Holland’s commitment to safety and our vision of No Harm.
The loyalty and commitment of our team of tunnelling specialists is evidenced by our low level of staff turnover. We have a balanced depth of youth and experience and a skill base covering all aspects of tunnel construction.
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