Shanghai Metro: keeping world’s longest mass-transit rail system on track
What it takes to run one of the busiest, safest, most punctual and affordable subway systems on the planet
Some respite from the intense summer heat can be found 18 metres below the scorching streets of Shanghai, but humidity remains energy sapping in the dark tunnels that are growing beneath Pudong. And yet, Yang Jun’s men keep drilling, and the huge tunnel-boring machine they operate advances 9.6 metres per day.
“We use concrete blocks to cover the walls of the tunnels as the ‘mole’ moves forward,” shouts Yang, trying to make himself heard above the din. “Each circle is made up of seven 1.2-metre-wide pieces and takes about 1.5 hours to complete. It’s a hard task.”
Yang is project manager of Shanghai Metro Line 14, the construction of which began this year ahead of an expected 2020 opening.