chaplin grout plant and headwall construction
DESCRIPTION
Chaplin Grout Plant and Headwall Construction Spring 2014TRANSCRIPT
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Jamie Robinson Director, Communications and Community Relations Toronto Expansion Projects, Metrolinx
Chaplin Grout Plant and Headwall Construction Spring 2014 Councillor Stintz Briefing February 3, 2014
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Eglinton Crosstown LRT Project $4.9 B (2010$), funded by the Province of Ontario 19 kilometres east-west LRT from Kennedy to
Jane/Black Creek, including 10 kilometers of tunnel Connections to Yonge-University-Spadina Subway,
Scarborough RT and GO Stouffville Up to 26 stations
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Tunnelling Works 2014
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Tunnelling Update
TBM 1 is well underway with tunnelling; just recently bored through our west headwall at Keele St.
TBM 2, a twin machine, has been assembled and is following closely behind
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Tunnel Drive Sequence
2. Construct Extraction Shaft
1. Construct Tunnel Launch Shaft
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Tunnel Drive Sequence
Install Jet Grout Block “Headwalls” from Surface
Commence Mining Twin Tunnels
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Tunnel Drive Sequence
Mine-Through Jet Grout Blocks
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Tunnel Drive Sequence
• Excavate Station and Commence Removing Concrete Tunnel Liners
After Tunnel Contract: • Install Station
Sidewall and Headwall Support of Excavation
Finally: • Station Box Fully
Excavated & Tunnel Lining Removed (Not shown)
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Launch Shaft Tunnel Boring Machine
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Tunnel Drive Works 2013
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Tunnel Drive Works Current Status
In 2013 the majority of tunnel works took place between Black Creek Drive and the vicinity of Allen Road
In 2014 work continues east of Allen Road Crews are starting the construction of headwalls and utility
relocation at future station sites along Eglinton Avenue West
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Tunnel Drive Works
Headwalls: Temporary support walls for future excavation of the LRT stations.
Made of concrete and installed to the depth of the future track level
Two methods of installation used: Secant Pile Walls, Jet Grout
Machinery including drill rigs, grout tanks, diggers and other equipment
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Tunnel Drive Works
Secant pile wall : formed by intersecting concrete piles
Jet grout wall : uses engineered grout to form wall in situ
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Jet Grout Headwalls
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Grout Plant for Headwall Construction Why a grout plant at Chaplin? Headwalls for Chaplin required Gilgorm adjacent to work site Gilgorm to remain open one lane northbound Allows efficient use of space Other options examined included Vesta Drive and Eglinton Gilgorm preferred because of: reduced property impact reduced footprint on Eglinton Ave.
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The site will be situated on Metrolinx-owned property and occupy City of Toronto roadway
A fence will enclose the site to demarcate the site from the public roadway throughout the entire works
The plant will service headwall construction for Chaplin Station and cross-passages at Vesta Dr and Castle Knock Road
The site is expected to be in place for approximately 8-10 months
Grout Plant at Chaplin
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Grout Plant at Chaplin
Advantages of jet grout technique for headwall installation: Reduce requirement for
extensive utility relocation Overall construction time
savings
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Timeline With appropriate permissions in place Metrolinx’ contractor will: Begin to set up the grout plant Install fencing and secure the perimeter Install grout lines in the roadway Test works Begin Chaplin headwall construction works Chaplin headwall construction is currently scheduled to
commence in March 2014 8-10 months anticipated Headwall works at Avenue Road and Bathurst are currently
being reviewed
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Chaplin Work Staging- South Setup Work is set up on the south side of Eglinton The work zone is separated from the ROW with concrete
barriers and fencing Unoccupied traffic lanes remain open on the north side of
Eglinton with one lane in each direction Through-traffic southbound on Chaplin at Eglinton will not
be permitted Southbound traffic must exit at Eglinton or choose an
alternate route Expected duration: Approximately 4 months
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Chaplin Work Staging- North Setup A work site is set up on the north side of Eglinton The work zone is separated from the ROW with concrete
barriers and fencing Unoccupied traffic lanes remain open on the south side of
Eglinton with one lane in each direction Through-traffic northbound on Chaplin at Eglinton will not
be permitted Northbound traffic must exit at Eglinton or choose an
alternate route Expected duration: Approximately 4 months Latimer Avenue is closed to/from Eglinton during this phase
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Chaplin Station Plan View
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Chaplin Station Preliminary Station Concept
Looking West
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Chaplin Station Entrance Locations
Primary Entrance Secondary Entrance
Secondary Entrance
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Next Steps
Community Relations will outreach to specific condos and apartment buildings to raise awareness of the site and planned works
Co-ordination with TTC will continue to ensure continued bus service
Co-ordination with local Fire Station also continues to ensure service levels
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www.metrolinx.com
Thank you