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  • Construction Works at Avenue Station 10/4/19

Construction Works at Avenue Station 10/4/19

4 Oct 2019 8:09 PM | David McMahon (Administrator)

AVENUE STATION CONSTRUCTION UPDATES

MINING UPDATE


Mining operations are underway at both the Secondary Entrance and the Main Entrance sites. Mining occurs on a 24 hour schedule. Read the construction notice for more detail.
 
The mining excavation sequence continues between the Main and Secondary Entrances and east of the Secondary Entrance. This sequence includes drilling roof supports, removal of earth and coating exposed surfaces with shot-crete.   
 
Mining work between the Main and Secondary Entrances will be completed in late October. Once completed, activities in the cavern will shift to permanent works which include waterproofing and concrete works to build the permanent station structure underground.  
 
Crews also continue to excavate to the east and are currently underground mid-block between Oriole Parkway South and Eastbourne Ave. These activities include removing earth and drilling horizontal roof supports underground. During the next 3-4 weeks regular excavation works will be underway.
 
In mid to late October, crews will be required to complete some demolition activities within the cavern which may be more noticeable for those closest to the construction location.
 
Based on the location of your property and the type of activity being completed some works may be more noticeable.
 
The general mining activities occur in a continuous sequence – drilling roof supports, excavation under the roof supports and spraying of concrete to finalize exposed areas underground. Within the excavation portion of the sequence, periodic removal of concrete sections of the existing tunnels is required as well as periodic chipping of temporary concrete linings. When possible, crews complete higher impact works during the day, however due to the sequence nature of the work and the engineering requirements related to ground stability and cavern integrity, it’s possible some of this activity may occur during the overnight hours.

Noise and Vibration Mitigation


Noise and vibration impacts to your building depend on your proximity to the source and how the vibrations travel through the soil and interact with the foundation and structure of your building. Crosslinx Transit Solutions has implemented several noise reduction measures on site to mitigate the impact felt by the community during mining activities. Enclosures are used to cover equipment like generators and pumps, silencers are used to reduce noise from fans, and delivery routes and times are selected to minimize disruption – just to name a few.

If you experience disruption from mining activities, please call our 24/7 phone line at 416-782-8118.
 

CONSTRUCTION ACTIVITIES
ONGOING & NEW NEXT WEEK

 

ACTIVITY & AREA

WHAT TO EXPECT

DURATION

TENTATIVE DATE

Concrete Pours

  • Concrete pours will occur approximately once per week over the next year.
     
  • Concrete trucks will be staged in the existing laydown area on the north side of Eglinton Avenue and exit the site at the gate on the west end of the site.
     
  • Some of the trucks will be required to back into the west gate of the secondary entrance due to coordination with other construction activities that will be underway during the concrete pour. 

6 a.m. to 11 p.m.

Weekly

 

Connection Bore Holes

West of Main Entrance
*more details in CLC deck from September 4

  • Additional connection holes to the tunnels are required to facilitate final lining activities and deliver concrete to the cavern level
     
  • Drilling of the bore holes will occur just west of the Main Entrance.
  • Drilling will take approximately one (1) week.
     
  • Concrete pours will begin in late October

Mid-October

Dewatering Well Maintenance

Periodic maintenance of dewatering wells as required.

  • Periodic maintenance will be ongoing and require a short duration (1 day) enclosure around the well in the right of way
     
  • A compressor and occasional hydrovac truck will be used to complete the maintenance

Ongoing

9am to 4pm

 

Monitoring Work
 

Equipment is installed in various locations around the station are to monitor ground movement during construction.
 

Read the construction notice for more detail.

  • To install the monitoring equipment in the ground, crews move from location to location around the station area. Typically a drilling machine is used to drill the hole where the monitor will be installed.
     
  • If on the sidewalk, pedestrians may need to be routed around the work zone (sidewalks stay open). If on the roadway, a short term lane closure may be required.
  • Readings will be taken regularly for the duration of the project.
     
  • Installations planned to be complete in the next few months.

 

Ongoing monitoring

Currently installations are focused east of Secondary entrance

 


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