Kolkata: The nation’s deepest underground rail air flow shaft equal to a 15 storey constructing and an necessary a part of town’s East-West Metro line was accomplished on Monday, officers stated.
The air flow shaft, which is 43.5m deep, was accomplished collectively by Kolkata Metro Rail Company (KMRC) and Afcons, a personal engineering firm.
Such shafts are usually not solely used to offer air flow to the tunnels, but in addition for evacuation throughout an emergency.
The evacuation shaft is positioned on Strand Highway close to Hooghly river, a press release stated.
“The Metro shaft has been constructed adopting progressive engineering strategies and methodology to navigate geological challenges and overcome any impression on Kolkata’s round railway observe alongside the Hooghly, Afcons undertaking supervisor Satya Narayan Kunwar assist.
The shaft is positioned very near the river and abutting with the round railway which makes its deep excavation very difficult, it stated.
The round railway line runs parallel to the river in stretches.
The 16.6 km-long speedy transit undertaking will join the dual cities of Kolkata and Howrah.
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