Update: Wells House boundary wall works

What we are doing

We previously notified you of work to stabilise the Wells House Road boundary wall, and we are writing to provide an update on the work. Following the approval of our recent Schedule 17 Application, we now plan to start the next phase of this activity on 29 November 2021.

Based on the results from the trials and assessments of the wall monitoring, the designers have recommended that we install soil nails rather than the ground anchors previously considered. Soil nails are permanent support structures that will not need to be removed. They are designed and constructed so that they don’t need to be maintained. They will provide support to the boundary wall. Soil nails have the advantage of ongoing stabilisation and will help anchor the wall in the event of future movements.

Work will take place on the Old Oak Common Lane side of the wall. As part of the stabilisation process, a structural membrane comprised of reinforced concrete will be applied to the face of the wall providing further support. The reinforced concrete structural membrane will also provide protection to the existing wall from further deterioration.

Core holes will be drilled through the existing concrete boundary wall, the soil nails will be pushed through these cores and cement grout will be pumped into the holes to secure the soil nails. The reinforced concrete structural membrane will then be applied to stabilise the wall. During this time, we will also create small holes penetrating the existing wall to provide pressure relief wells to reduce groundwater pressure acting on the wall. Throughout these works the boundary wall will be continuously monitored for movement.

These works will take place from 8am to 5pm, Mondays to Saturdays. No works will take place on Sundays. Quiet activities, including the arrival of workers, deliveries and unloading will also take place in the hour before and after these work times.

Changes to Traffic Management on Old Oak Common Lane

To safely carry out the stabilisation works on the wall, we will need to reinstate the three-way traffic lights on Old Oak Common Lane, and extend the lane closure further North on the northbound carriageway. These changes will be implemented over the coming months and remain in place until the completion of the works in April 2022.

Download information relating to these works

• Update: Wells House boundary wall 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]