TBMs

TBMs head north for CRR duties

Two tunnel boring machines (TBMs) that were in use on the Sydney Metro project have been shipped north to begin digging twin tunnels under the Brisbane river for the Cross River Rail project.

Queensland Premier Annastacia Palaszczuk said the machines have arrived and are being prepared to start major tunnelling for the underground rail project.

“They are the same machines that dug the Sydney Metro. Now they’ll get a full refit and refurbishment at Herrenknecht’s north-side facility, to prepare them to dig Brisbane’s first underground.”

The two TBMs will excavate the twin tunnels that will connect the rail lines north and south of the Brisbane CBD via a new river crossing. The machines will be launched from Woolloongabba Station on Brisbane’s south-side and emerge at the project’s northern portal at Normanby.

During tunnelling, the TBMs will carve through the Albert Street and Roma Street stations sites. The TBMs will travel 30 metres a day and line the tunnels with concrete segments as they create the passages. An expected 290,000 cubic metres of soil will be generated over the course of tunnelling.

Each of the TBMs weighs 1,350 tonnes and is 165 metres long. At its peak, refurbishment work will be done 247 at Herrenknecht’s site in Pinkemba.

Palaszczuk said that preparing the TBMs to work on the Cross River Rail project will create local jobs.

“More than a dozen people have started working on the refit of the Cross River Rail TBMs, and that will increase to up to 35 people during peak activity – local jobs at a local factory.”

State Development Minister Kate Jones said these jobs would have a long-term benefit to Queensland.

“Cross River Rail will transform the way we travel and it will also leave behind a legacy of skilled workers trained by world-leaders in specialist trades,” said Jones.

First sod turned on Mt Eden site for Auckland CRL

A supplier has been chosen for the tunnel boring machine for New Zealand’s City Rail Link project, as a ground-breaking ceremony begins construction at the southern tunnel portal.

Herrenknecht will supply and build the $13.5 million tunnel boring machine, which will be shipped from its manufacturing site in China later in 2020 to be reassembled at the Mt Eden portal. Tunnelling will begin in February 2021.

The portal at Mt Eden will allow tunnelling to continue to central Auckland, and will open up land in the immediate vicinity for development, said NZ Transport Minister Phil Twyford.

“Not only will CRL boost Auckland’s transport system, it will stimulate urban regeneration with jobs and affordable housing around Mt Eden station and elsewhere along the city’s rail corridors – a completed CRL will double the number of the number of people within 30 minutes of central Auckland, New Zealand’s biggest employment hub,” he said.

According to Auckland Mayor Phil Goff the transport project will increase the use of rail in New Zealand’s largest city.

“The CRL will be a gamechanger for Auckland, allowing 54,000 people an hour to travel into the city at peak times. It adds capacity equivalent to three Harbour Bridges or 16 extra traffic lanes into the city at peak. The TBM will be the star of the show, providing the mechanical muscle required to get the job done as quickly as possible,” he said.

City Rail Link chief executive Sean Sweeney said that the breaking of ground in Mt Eden comes 12 months on from the collapse of rail track, signalling, overhead lines, control system rooms, communications and building works provider RCR Tomlison went into administration. RCR Tomlison’s NZ subsidiary was in partnership with WSP Opus at the time.

“Far from a setback, that collapse was the catalyst for big and rapid change inside the project and we are now celebrating the benefit of those changes – a CRL team that includes the best expertise from New Zealand and overseas that’s ready to deliver the next big step of an outstanding project for Aucklanders.”

As part of the works, the public will be able to name the tunnel boring machine, with the condition that the name be one of a prominent NZ woman.