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Best regards
Zmags
October/November 2025
www.tunnellingjournal.com
Finale and Curtain Call
page 10
North American Tunneling Journal 1
TUNNELLING JOURNAL OCTOBER/NOVEMBER 2025
October/November 2025
The International Journal for the Tunnelling Industry
www.tunnellingjournal.com
HS2: Northolt
drives complete
Page Page Page
10
Lisbon Drainage
Master Plan
In Lisbon, the
construction of two
tunnels designed to
alleviate flooding in the
city is underway. TJ’s
Kristina Smith visited
the project to check on
progress. 16
15 minutes with
Örjan A Sjöström
TJ reviews the career
of one of Sweden’s
most illustrious
Tunnelling Engineers. 30
T
The role of
Directional Core
Drilling in tunnelling
Ivan Dimit
October/November 2025 www.tunnellingjou
TUNNELLING JOURNAL OCTOBER/NOVEMBER 2025 October
2 Tunnelling Journal
CONTENTS Editor’s comment – page 5 Industry News
TBM diameter variation (6.5 m ‒ 8.0 m) on 50° inc
EDITOR’S COMMENT Planning ahead… How Örjan Sjös
BREAKING INDUSTRY NEWS Chiang Mai flood project co
Tunnelling Journal 7
THE DIGITAL TUNNELLER Naomi Wheeler Reed, Associa
TECDOS LINEAR MOTION ROBUST , RELIABLE & STRONG
Fighting flooding and climate change in Lisbon In
Lisbon Drainage Master Plan Two tu
attenuate flow during heavy rainfall events. H
Lisbon Drainage Master Plan techniques can be
NATM works at the shaft on Avenida
Tunnelling Journal 15
15 minutes with… Örjan A Sjöström were then wri
that tunnel from becoming inundated that day, by
The 9m diameter TBM for the rail tunnel
Tunnelling Journal 19
HS2: Northolt drives complete With all four drive
Northolt Tunnel update try and get some synerg
Auto mation and Digitalisation in Conventional Tu
Centre, sitting only 4m above the top of the tunn
SCS JV is constructing
0121 508 6970 | mapei.co.uk Tunnelling Journal 25
Q&A When it comes to attracting and retaining the
and guidance, shift to a mindset of providing exp
That’s the gift of transformational leadership. I
| TUNNEL CONSTRUCTION
The role of Directional Core Drilling in tunnelli
The role of Directional Core Drilling in tunnelli
core drilling. This method was used exclusively f
Advances in Tunneling Technology | November 3-5,
CONTACT US Tris Thomas Editorial Director Tel: +
VE TECHNICAL SESSIONS | GLOBAL INDUSTRY LEADERS
TUNNELLING JOURNAL OCTOBER/NOVEMBER 2025 October
October/November 2025 www.tunnellingjou
ELEVATED THINKING, UNDERGROUND This year marks a
Comment The big question If you didn’t make it t
NORTH AMERICAN NEWS MTA approves Second Avenue Su
NORTH AMERICAN NEWS Gall Zeidler marks 25th anniv
THE INSIDER Bob Goodfellow, PE, PEng, President,
Pioneering smarter underground solutions From co
Off screen A rapidly-growing Women in Tunneling i
now that you’re not in a loud environment,” Chast
www.tunnellingjournal.com Finale and curtain
FINALE AND CURTAIN CALL Congested city streets
TBM launch at Great Northern Way-Emily Carr Stati
FINALE AND CURTAIN CALL TBM breaking through a
www.tunnellingjournal.com Advancing tunneli
KEEP YOUR PROJECT ADVANCING INTERNATIONAL HYPERB
Extreme tunneling Even in North America, where ci
path forward. “You need to get all the decision-m
Disc cutter inspection at 3.0 bar
EXTREME TUNNELING Los Angeles’ historic undergrou