Notice of launch pit excavations, reinforced concrete works, and micro-tunnelling on Wormwood Scrubs
Work item: HS2-MW-BBVS-Ph1-OOC-St-S4-Prog-works-12-07/03/2022
Work Item Summary
- Project Phase
- Phase 1
- Region
- Old Oak and North Acton
- Location
- Old Oak
- Worksite Name
- Old Oak Common
- Contractor
- BBVS JV
- Type of works
- Tunnelling
- Estimated Start Date
- 28/03/2022
- Estimated End Date
- 30/09/2022
What we are doing
Excavation and Reinforced Concrete Works in Wormwood Scrubs
We will be excavating a launch shaft to prepare the area to launch the micro-tunnelling machines. As part of this work, we will also be installing concrete structures in the ground to enable the micro-tunnelling to be carried out.
To complete this work an excavator will dig to the pit floor. All material will be removed from site using tipper lorries. Once the excavation is complete, we will install a concrete base slab with front and back walls.
Micro-tunnelling works in Wormwood Scrubs
Once the shaft is complete, we will be installing eight micro-tunnels, which will run from the launch chamber in Wormwood Scrubs site underneath the railway tracks to the reception chamber in the main site. These micro-tunnels will be used to divert the services along Old Oak Common Lane. This diversion is needed to allow us to lower Old Oak Common Lane that is planned in the future.
The works will be carried out within the secure compound built in Wormwood Scrubs and no additional vegetation clearance will take place as part of this work. We will use best practicable means to minimise any impact on our site neighbours. The noise and vibration impact from the operation will be negligible and will be no more than the passing traffic. The works will be completed within the site hoarding, which will act as a barrier to reduce the noise. The excavation and reinforced concrete works will be carried out between 8am – 6pm Monday to Friday and 8am – 1pm on Saturdays.
For safety reasons, the piping installation and micro-tunnelling works will be 24/7 whilst the tunnels are under construction. Weekend working will only apply if there is a tunnel already under construction, for example a new tunnel will not be started on a weekend.
Download information relating to these works
- Notice of launch pit excavations, reinforced concrete works, and micro-tunnelling on Wormwood Scrubs
Find out more about
If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]