The completion of the Northolt Tunnel, part of the HS2 railway project, was achieved after the final tunnel boring machine (TBM), named Anne, finished its journey. This complex engineering feat involved managing high water pressure with specially designed steel reception cans. The Northolt Tunnel runs from West Ruislip to the new Old Oak Common station and is one of five deep twin-bore tunnels on the HS2 route. With the excavation complete, work will now focus on constructing a flat tunnel invert for track laying and mining cross passages for ventilation and safety.
The successful completion of the Northolt Tunnel marks a significant milestone in the HS2 project, reinforcing the ambitious vision for high-speed rail in the UK.
The complex engineering efforts have enabled the TBMs to manage high underground water pressure effectively, ensuring the tunnels' integrity as they near completion.
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