05/06/2026
Robotic shotcrete application is playing a key role in strengthening the Lyon–Turin Tunnel ventilation shaft, supporting stability, safety, and the long-term performance of critical underground infrastructure.
Shotcrete is a vital process in stabilizing underground excavations, especially in large-scale infrastructure developments like the Lyon–Turin Tunnel. At the final ventilation shaft in Avrieux, advanced robotic spraying systems are being used to deliver highly precise and consistent application.
The automated system ensures controlled placement, uniform thickness, and strong adhesion to the surrounding rock mass, forming an immediate structural support layer that prevents loose material from detaching and enhances overall ground stability.
By reinforcing the shaft walls, shotcrete significantly improves worker safety while ensuring the long-term durability and integrity of the tunnel structure. Through precise equipment calibration and coordinated ex*****on, the team maintains efficiency while meeting strict engineering and safety standards throughout this critical construction phase.
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