Melbourne Metro Rail Project Presentation by Dr Russell Keays - - PowerPoint PPT Presentation

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Jun 10, 2023 433 likes •582 views

EES Inquiry Melbourne Metro Rail Project Presentation by Dr Russell Keays Keays Engineering Basic Assumption The major Environmental Benefit from constructing more public transport infrastructure is to encourage the travelling public to

SLIDE 1

EES Inquiry Melbourne Metro Rail Project

Presentation by Dr Russell Keays Keays Engineering

SLIDE 2

Basic Assumption

The major Environmental Benefit from

constructing more public transport infrastructure is to encourage the travelling public to abandon their cars and take public transport.

– The maximum long-term benefit is achieved by locating the infrastructure where people want to go.

– The short-term benefit comes from designing the works to minimise disruption to existing public transport.

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Where do people want to travel?

SLIDE 4

In the City

Queen Street and Russell Street are central to the business district. Swanston Street is for shoppers, theatre-goers – off-peak users.

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Advantages of separate network

Can use of autonomous (driver-less) trains.

– Requires fewer staff to operate trains. – Allows smaller separation times, greater frequencies. – Rapid turn-around at terminus.

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Advantages of separate network

Third-Rail Electrification and Smaller Tunnels

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Construction Methodology

Shallow Tunnels

– Avoids penetrating below groundwater levels wherever practical. – Minimises groundwater seepage. – Easier and cheaper to construct.

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Top-Down Construction

Not “Cut and Cover” but “Cover and Cut”
Pre-cast roof panels for rapid construction
Deliver the majority of Spoil down-tunnel, not

through suburban streets.

Minimise disturbance to local communities.
Travel time from Platform to Street reduced

(with stations at 35m below ground, each passenger looses about 3 minutes per day)

SLIDE 9

End of Presentation

Refer to written submission for more details.

SLIDE 10

Other illustrations from Submission

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STAGE 1 BORE PIERS BACK.fill OVER TOPS STAGE 4 PLACE FLOOR SLAB

STAGE 2

REMOVE TOP SURFACE INSTALL PRECAST PLACE 811\JtEN COVER STAGE5 SHOTCRETE WALLS

OLUME

12.5m

3/m

STAGE3

EXCAVATE TO OEPlH

STAGE6

PLACE RAILS INSTALL SER\11'.;ES

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24200 3500 3500

9 9 9 9

~ ~ ~ ~

8800

SECTION ON TWIN TRACKS UNDER URBAN COLLECTOR ROAD (4 LANES@ 3.5m WIDTH)

5100

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. . . 11

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SECTION ON STATION UNDER URBAN COLLECTOR ROAD STAIRWAY TO STREET IN MIDDLE ROADWAY REDUCED TO SINGLE LANE AT STATION