Meyrin cut-and-cover tunnel – Electromechanical equipment

Customer

DCTI - State of Geneva

Services

• Design of operational and safety equipment
• Dynamic ventilation and smoke control studies
• Call for bids
• Design of the project
• Management of construction work
• Acceptance of the systems

Construction

2004-2010

Cost

6 MCHF

Main characteristics of the cut-and-cover tunnel

• Length: 565 m
• Access via double approach lanes measuring 95 m
• Grade: 2.4 to 4.5%
• Structure gauge height: 4.5 m
• Traffic forecast: 20,000 vehicles / day

Project Description

The Meyrin cut-and-cover tunnel consists of burying the route de Meyrin where it passes through the old village of Meyrin in order to build the new tram line linking Cornavin-Meyrin-CERN.
BG is responsible for the electromechanical equipment needed to ensure user safety under normal circumstances, as well as in special cases should an accident, traffic jam, fire or other incident occur in the tunnel.

The systems include:

• Electric power supply and distribution
• Ventilation of the tunnel and premises
• Lighting of the tunnel and approach lanes
• Safety signage
• Video monitoring and automatic incident detection systems
• Radio network, Polycom
• Fire detection and control
• SOS Emergency Call network
• Communication network
• Centralised technical management of the tunnel