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Chaplin Grout Plant and Headwall Construction Spring 2014
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Jamie RobinsonDirector, Communications and Community RelationsToronto Expansion Projects, Metrolinx
Chaplin Grout Plant and Headwall ConstructionSpring 2014Councillor Stintz BriefingFebruary 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 ConstructionWhy a grout plant at Chaplin?Headwalls for Chaplin requiredGilgorm adjacent to work siteGilgorm to remain open one lane northboundAllows efficient use of spaceOther options examined included Vesta Drive and EglintonGilgorm preferred because of:
reduced property impactreduced 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 relocationOverall construction time savings
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TimelineWith appropriate permissions in place Metrolinx’ contractor will:Begin to set up the grout plantInstall fencing and secure the perimeterInstall grout lines in the roadwayTest worksBegin Chaplin headwall construction worksChaplin headwall construction is currently scheduled to commence in March 20148-10 months anticipatedHeadwall 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 StationPlan View
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Chaplin StationPreliminary Station Concept
Looking West
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Chaplin StationEntrance 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