| CONTENTS


10


Three-spoke anti-clogging cutterhead on AVN1800


Image credit: Valentin Environnement (via Herrenknecht)


Comment 3


REGULARS 7 News


30 Events


TECHNICAL Ground investigation


10 17 22 January 2026 | 5


17 22


GI for pipejacking G. Lehmann, C. Mosdzin


Discussion on geotechnical investigations necessary to benefit the application and design of pipejacking TBMs on small diameter tunnel projects.


INSIGHT Ventilation


Refurbishment case study I. Riess


Challenges of refurbishing the ventilation systems in operating tunnels are many, and the case of decisions at Giswil road tunnel, in Switzerland, are examined.


SECTORS Asia Projects in Asia Data on tunnel-related project pipeline value in different global regions, now led North-East Asia (and China), plus spotlights on project milestones elsewhere in Asia.


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33