Features
Our editorial board comprises a specialist group of leading industry figures who, in conjunction with the TUNNELS editorial team, identify the main drivers of the industry helping to produce regular, thought provoking opinion pieces on the latest issues, challenges and developments.Latest Tunnels Feature
Utility tunnels are among key underground investments in two major Canadian cities – Toronto and Vancouver
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Succeeding in the shadows
Surveying and scanning have been combined to build New Zealand’s first underground railway. Report by Mary Jo Wagner
Shields at the ready
With multiple TBM tunnelling projects constantly in preparation or underway globally, T&T briefly spotlights a few from the last couple of years
Single pass solution for Ecuador sewer
For a pressurised sewer project in Ecuador, long pipe jacking drives with MTBMs were key to constructing a single-pass hybrid lining. Bernard Catalano of Bessac Canada describes the challenge and choices
Two tales of technology
Recent technology successes for Robbins include an award-winning conversion of a TBM diameter while underground, and continuing to see the difference the robust McNally support system delivers for excavations in difficult ground
Approach to multiple drives
Acciona continues to manage multiple TBM tunnelling projects across the globe, employing a strategy that includes its own stock of shields as well as new machines, and significant data gathering and analysis
Istanbul vision for Hizray metro
Hizray is a major metro project of global significance that is planned to be bored mostly by TBM below Istanbul. Prof Dr Pelin Alpkökin, head of the city’s Rail System Directorate describes the large-scale plans
Taking steps to speed forward
Herrenknecht has won a major award for its new TBM continuous tunnelling system, has other advanced systems in operation, and is also developing automation for segment production
Why did that happen – failures below ground
Mike King of MK Tunnelling Limited provided the Harding Memorial Lecture to the British Tunnelling Society in November 2022. This meeting report was prepared by Mike King and a longer version of the paper will soon be made available on the British Tunnelling Society web site
Varied tunneling challenges in BC
Two tunneling projects in British Columbia present Acciona with quite different excavationchallenges – Broadway metro extension, in Vancouver, and BC Hydro’s Site C
Tunneling under operating highways and railways: Part 2
Keivan Rafie and Gary Kramer of Hatch present the second of their two-part look at lessons in planning and constructing tunnel crossings with shallow cover under live transport corridors
Single pass solution for Ecuador sewer
For a pressurised sewer project in Ecuador, long pipe jacking drives with MTBMs were key to constructing a single-pass hybrid lining. Bernard Catalano of Bessac Canada describes the challenge and choices
25 years of BTS/ICE specification for tunnelling
With all the upheavals of 2022 such as the passing of the late Queen, having the third Prime Minister in a single year at the time of writing and the deeply disturbing ongoing multi crisis it is easy to overlook that we celebrate a successful 25 years of the BTS/ICE Specification for Tunnelling in 2022.
