Notice of works to start excavating Westgate ventilation shaft
Work item: HS2-EW-SCS-Ph1-Ar-So-S2-Prog-works-7-24/06/2021
Work Item Summary
- Project Phase
- Phase 1
- Region
- Brent and Ealing
- Location
- Westgate
- Worksite Name
- Westgate
- Contractor
- SCS JV
- Type of works
- Excavation works
- Estimated Start Date
- 09/08/2021
- Estimated End Date
- 30/11/2021
What we are doing
Works to build a ventilation shaft from July 2021
From late July 2021, we will start works to build the ventilation shaft at our Westgate site. This will be 15 metres wide and about 43 metres deep to connect to the HS2 tunnels. We will start constructing the tunnels in this area from 2023.
Our construction team will build the ventilation shaft in stages:
1. We will install a concrete collar around the top of the shaft to support the ground.
2. We will install concrete rings and excavate the ground in layers to build the shaft.
3. When the ventilation shaft reaches about 11 metres below ground, we will continue excavation in layers and apply sprayed concrete lining (SCL) until the shaft reaches its depth of about 43 metres.
The map on the following page shows the location of these works.
Our working hours
During July and most of August, we will be working from 8am to 6pm on Mondays to Fridays and 8am to 1pm on Saturdays. From late August, we will extend our working hours to 24 hours a day on Mondays to Fridays. We will continue to work on Saturdays from 8am to 1pm. Both dates remain subject to change.
Download information relating to these works
If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]