17th Australasian Tunnelling Conference, 2021, Melbourne
Karangahape Road Station will be a new underground station on the Contract C3 of City Rail Link project in Auckland. The C3 comprises of 3.5 km twin-tunnel underground rail underneath Auckland’s city centre, two new underground stations at Aotea and Karangahape and expanded station at Mount Eden. The Karangahape Road Station is a 30 M-deep mined binocular underground station, with two shafts, platforms, lifts, escalators, rooms housing station and tunnel services equipmewnt, and an entrance at Merciry Lane and Beresford Square. Show more…This paper presents the story of the future proofing through project development of the station design, starting as a six-car station with a single entrance in reference design. The station will be built to accommodate nine-car trains. One of the key decisive facors being unprecendented increase in rail patronage in Auckland. Longer platform tunnels extended the tunnel mining to zones of shallow overburden and demands for tunnel ventilation brought challenges for ground support of large span platform tunnels at junctions with ventilation adits. Show less…
