Wednesday 14 October 2026

08:30-08:40
Introduction

08:40-09:00
The tunnels’ design for the cooling circuit of the Sizewell C EPR nuclear power plant
Benoit SENCEY (London, United Kingdom)

09:00-09:20
Hybrid tunneling approach to urban geotechnical challenges: Railway tunnel in Geneva
Azad KOLIJI (Lausanne, Switzerland)

09:20-09:40
Lisbon new circular Metro line: Buildings underpinning
Pedro FONSECA

09:40-10:00
Challenges posed by the design, manufacture and logistics of very long machines as part of the Euralpin Lyon-Turin Tunnel project
Frédéric BATTISTONI

11:00-11:10
Introduction

11:10-11:30
EDF’s feedback on accidents occurrences for pressurized galleries of its hydropower plants
Roland PLASSART (La Motte-Servolex, France)

11:30-11:50
Design and Construction of a High-Mountain Gallery as Part of the Reconstruction of the Grands Montets Cable Car (Chamonix)
Jordi PERELLO

11:50-12:10
Overview of the french technical evaluation framework for waterproofing systems in underground structures
David CHAMOLEY (Bron, France)

12:10-12:30
Underground works of subway expansion in riverside downtown Lisbon - Design changes, constraints and challenges faced during the construction
Pedro FONSECA

11:00-11:10
Introduction

11:10-11:30
Canada, Toronto – Urban Flood Protection: the Fairbank–Silverthorn Storm Trunk Sewer Project
Pierre LEONETTI

11:30-11:50
The INELFE Project: Exceptional Microtunnels to Meet Emerging Climate and Energy Challenges
Jean-Armel ALLIOTTE

11:50-12:10
The Microtunnel Boring Machine ‘Marième’ Serving the Mamelles Seawater Desalination Plant (Dakar, Senegal)
Rachid ZOUBGA

12:10-12:30
Salt Cavern H2 Storage: Operational Feedback and Safety Challenges
Hippolyte DJIZANNE (Verneuil-En-Halatte, France)

EUROPEAN SESSION: PROJECTS & PERSPECTIVES (Part 3 : Italy, Holland, Portugal)

14:00–14:10
Introduction

14:10–14:30
Central Kowloon Route: Drill, blast and construct one of the deepest and widest highway tunnels in the heart of Hong Kong
Ludovic JEANNE (Mid-Levels, Hong Kong)

14:30-14:50
Experience feedback from the works of the drainage tunnels of Lisbon
Christophe JASSIONNESSE

14:50-15:10
HS2 Tunnelling beneath the Bromford Viaduct – A Holistic Approach to Interface Risk Management
Jules BIRKS

15:10-15:30
An additional connection galley for an improved logistic management, TELT project Lot CO6-7
Benjamin LECOMTE

15:30-15:50
Site characterisation for CERN’s deep FCC tunnel: progress of the initial findings of the investigations
Lucy REW (Epagny Metz Tessy, France)

15:50-16:10
Construction of Large Underground Caverns at Great Depth in Alpine Railway Tunnels
Matteo FALANESCA (Lugano, Switzerland)

14:00-14:10
Introduction

14:10-14:30
Construction of a large-scale tunnel under significant overburden: back-analysis of the excavation of a technical cavern for the TELT project – Lot CO6/7
Florian BONFILL (Paris, France)

14:30-14:50
Excavation of a 14-meter-wide Twin-Bore Tunnel under Shallow Overburden between Two Artificial Islands in Chesapeake Bay, Virginia (USA)
Jérémy ALBRIEUX-CASTILLE (Nanterrre, France)

14:50-15:10
Observational method applied to the Snowy 2.0 cavern/gallery junctions design
Joao Victor HERNANDES (Saint Ouen, France)

15:10-15:30
Lessons Learned in controlling earth pressure confinement on Lot 4 of the Toulouse Metro Line C Project
Gonzague BRACQ (Guyancourt, France)

15:30-15:50
Lyon-Turin project: feedback on the excavation of a tunnel in a squeezing fault zone
Wassim MOHAMAD (Epagny Metz-Tessy, France)

15:50-16:10
Influence of loading methods on the accuracy of the stress state in tunnel linings during fire spalling tests
Mahmoud ABOUDALLE (Epernon, France)