German railways are employing an innovative system that allows tunnels to be widened while trains continue running through them. Developed by Herrenknecht, a company renowned for its tunnel boring machines, the Tunnel Enlargement System (TES) is specifically designed to enable railway lines to be electrified without disrupting rail traffic. The system allows trains to continue running on a temporary track while the tunnel is being widened.
The process begins by dismantling the existing tracks and installing a temporary track in the centre of the tunnel. This track allows trains to continue running while the TES moves forward step by step, excavating and widening the tunnel. The TES acts as a protective enclosure, separating the construction work from live rail traffic to ensure the safety and continuity of train services.
The TES is composed of three main parts:
Key Benefits
The Tunnel Enlargement System is a game-changer for railway construction, making it possible to upgrade infrastructure with minimal disruption. As the demand for electrified rail networks increases, solutions like TES will play a crucial role in ensuring efficient, safe, and continuous rail operations.
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