Sydney Metro: A day in the life of a tunnelling segment

Описание: We need 99,746 segments of concrete for Sydney’s new metro railway tunnels.

This is the story of how they’re made – from the specialised factory to their installation deep underground in the twin 15.5km tunnels from Chatswood to Sydenham.

More than 130 people work at the Marrickville factory run by Sydney Metro’s tunnel builders John Holland CPB Ghella, producing one four-tonne segment every six minutes.

Sydney Metro is Australia's biggest public transport project.

VIDEO TRANSCRIPT:

Born at Marrickville

One made every 6 minutes

About 280 a day by a team of 120 workers

Each segment weigh 4 tonnes

3.5m long and 1.7m wide

Each segment is designed for a precise location inside a metro tunnel

A state of the art facility delivering 99,746 concrete segments

Stacked on top of each other, they'd stretch 26km into the air

From factory to construction site

Crossing one landmark transport project to get to another

Headed underground in the correct order

Into the mega tunnel boring machine

Six segments make one concrete ring

Installed inside the mega borer as it digs forward

16,451 rings line the tunnels

Leaving a completed tunnel as the mega borer moves ahead

Twin 15.5km tunnels from Chatswood to Sydenham

Extending metro rail from Sydney's north west

New city metro stations open in 2024

Australia's biggest public transport project.