| CONTENTS


Projects BTS Meeting report


10 24


One of two Herrenknecht gripper TBMs set to use its ‘Wurm’ lining system on TELT’s Mont Cenis rail tunnel Image credit: Herrenknecht


24 Comment 3 10


30 33


REGULARS 6 News 42 Events 30


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Projects: HS2 - Client’s Perspective Martyn Noak, HS2


Mark Lemmon, HS2


Report from the BTS/BGA meeting of Oct 2025 where the Client’s overview and perspective on the HS2 rail was shared, including a project update.


TECHNICAL Linings


Wurm for Mont Cenis Frédéric Battistoni, Herrenknecht Roland Herr, Journalist


Herrenknecht’s ‘Wurm’ lining and installation system is to be deployed behind each of two Gripper TBMs on TELT’s Mont Cenis Base Tunnel.


BTS, BTSYM


SCL guidance Bethan Haig, BTS


The BTS has published its best practice design guide on ‘Sprayed Concrete Linings in Soft Ground’.


UTILITIES/


TRENCHLESS Preview: No-Dig Show 2026 A preview of the key trenchless and small diameter tunnelling event in North America.


Technology: New Comms Below Artur zu Eulenburg


Enhancing safety and efficiency in pipejacking were two key goals for VMT in developing the TunnelHub communication platform, used in a project in Germany


36 March 2026 | 5


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