HS2 Chiltern tunnel headwall ready for tunnel boring machines [Rail Engineer]





Date: 31/07/2020

HS2 is preparing for the arrival of its first giant tunnelling machines by completing the 17-metre-high headwall and ground reinforcement at what will become the south portal of the 10-mile long Chiltern tunnel. Led by HS2s main works contractor Align JV - a joint venture formed of three companies: Bouygues Travaux Publics, Sir Robert McAlpine ...


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Rail Engineer