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Challenges abound, and opportunities
29 April, 2024
A small selection of recent experience with trenchless projects in the US, ranging from asset assessment technology developments with AI, discussed by Jacobs, to weighing the tunnelling, then microtunnelling, options below a live airport runway, as briefed by AECOM

Neutrino research cavern digs completed
29 April, 2024
DUNE project caverns have been excavated in the US and are ready for fit out for neutrino particle studies as part of an international research initiative

NAT 2024 – Preview
29 April, 2024
The UCA North American Tunneling (NAT) Conference 2024 is to take place in Nashville, Tennessee, in late June. Here we provide our first preview of plans for the large industry event

Construction of large diameter shafts within challenging ground conditions
29 April, 2024
The Harding Prize Competition is named after the founder of the British Tunnelling Society, Sir Harold Harding, and is for entrants under the age of 33. Shortlisted papers were presented to the BTS evening meeting on 21 March, at the Institution of Civil Engineers, in London.

Progress at Pawtucket
29 April, 2024
Major milestone progress with TBM breakthrough at the Pawtucket CSO Tunnel project, in Rhode Island. The region has complex, fluvial-derived geology with structural weak zones

Update: New York
29 April, 2024
Much is getting underway underground, once again, in New York city and state. T&T briefly looks at a few of the projects

Conveyor solution for Manila Metro
29 April, 2024
In Manila, the latest tunnelling works for the Philippines’ capital’s expanding metro network sees two of Terratec’s Continuously Advancing Conveyors supporting the advancing TBM works on Lot 101, Phase 1 of the project

Logistics for long and deep tunnels
29 April, 2024
The challenges of working on long and deep tunnels through the lens of logistics were presented in a report last year from the ITA

Untangled and out
29 April, 2024
With so many trenchless projects underway across North America, many challenges are faced – and overcome. T&T catches up with one such, but unusual, challenge in Toronto

Arnold Dix – Interview
28 March, 2024
A tunneller with 100 million website hits? Unlikely, surely, but Arnold Dix is an unlikely tunneller. A tunneller is not supposed to be a successful barrister, a national icon, or be world famous. Dix has, accidentally, become the exception. He is, as well as all that, the current President of the International Tunnelling and Underground Space Association (ITA-AITES); this April he is to chair ITA’s annual Member Nations General Assembly meeting at the World Tunnel Congress (WTC 2024) in Shenzhen, China. Julian Champkin spoke to him

Embrace challenges as catalysts for change
27 March, 2024
Hagerbach Test Gallery recently helped to host some of the high-level discussions of the World Systemic Forum, a key theme of which was the value of underground environments, with ITACUS taking part. Antonia Cornaro, Co-Chair of ITACUS, and also Expert Underground Space with Amberg Engineering and lecturer on Planning of Underground Space at ETH Zurich, explains how such strategic discussions help collaboration for sustainable urban development and resilience planning

Shenzhen - Zhongshan Mega Sea Link
26 March, 2024
The Shen-Zhong fixed sea link is one of China’s most pivotal and challenging infrastructure undertakings, requiring a innovation in both the design and construction realms – including for the Steel-Concrete-Steel (SCS) composite structure of the long and wide immersed tube tunnel. The project is described by CHEN Weile, SONG Shengyou, LIU Jian, CHEN Yue, and JIN Wenliang of Shen-Zhong Link Management Center

ITA on immersed & floating tunnels
26 March, 2024
Two of the many reports from ITA in the last two years have focused on immersed tunnels and floating tunnels, respectively, through the efforts of the expert team in the area, Working Group 11 (WG11)

Innovation for major segmental tunnels
25 March, 2024
Bekaert’s Dramix® fibres have recently played significant roles for tunnel projects in two countries with major events coming soon – in France, where the Grand Paris Express subway is supporting the capital hosting the 2024 Summer Olympic Games, and in China, which will shortly host the World Tunnel Congress (WTC) 2024 and among its many large projects to be featured is Qingdao Second Road Tunnel at Jiaozhou Bay. The designs are discussed by Benoit de Rivaz, Global Technical Manager, Bekaert BP Underground Solutions

Many requirements in Sweden – one MTBM hard rock solution
25 March, 2024
An exceptional microtunnelling project in Edsberg, Sweden, posed particularly complex challenges: very hard, highly abrasive rock and no possibility of a target shaft. The solution was the newly developed AVN 800 HR from Herrenknecht in combination with jacking of a temporary steel pipe string to withdraw the MTBM. Herrenknecht’s Michael Groß, Senior Product Manager Pipe Jacking, and Lutz zur Linde, Sales Manager Utility Tunnelling, discuss the technology and its application

Hypertunnel – Evolution Of Testing
25 March, 2024
R&D for hyperTunnel’s robots has evolved using ‘swarm’ rather than classic individual testing to enable the system to work in underground construction environments. The approach is discussed by Conor West, Support and Service Engineer with the company

Robert Mair – Interview
28 February, 2024
Few in the tunnelling world are known to the general public, fewer still are profiled in a broadcast programme such as on BBC’s prestigious ‘The Life Scientific’ on Radio Four. In fact, only one has been accorded that mark of public recognition and interest – Robert Mair, Emeritus Professor of Civil Engineering at Cambridge University, and recent Master of Jesus College there, and is past-President of the Institution of Civil Engineers.

Resilient underground design and systems
27 February, 2024
The need for subsurface spaces to be more sustainable and resilient was the focus of an ITA report published last year which, in considering ‘Urban Underground Space for Resilient Cities’, looked at need, strategies, design concepts to address the challenges

Delving Deep: Rethinking Underground Use
27 February, 2024
Rethinking Our Cities using the Underground Space’ was the important theme of a dedicated collaborative event hosted in Porto, Portugal, by the Portuguese tunnelling society (CPT), in Nov 2023, and moderated by ITACUS Co-chair Antonia Cornaro, Expert Underground Space with Amberg Engineering as well as lecturer on Planning of Underground Space at ETH Zurich. In this article, she describes and summarises the key points of the interesting discussion.

Technological Innovation Drives The High-Quality Development Of The Shenzhen Metro
27 February, 2024
Under the guidance of the innovation-driven development strategy, Shenzhen Metro is undergoing a transformation in its development model, transitioning from rapid expansion to a focus on highquality development.