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Update notice of grouting at Mandeville Road site

Work item: HS2-EW-SCS-Ph1-Ar-So-S2-Prog-works-1-15/07/22_02

Work Item Summary

Project Phase
Phase 1
Region
Hillingdon
Location
Mandeville Road
Worksite Name
Mandeville Road
Contractor
SCS JV
Type of works
Grouting
Estimated Start Date
16/10/2022
Estimated End Date
04/12/2022

What we are doing

What we are doing
We wrote to you in July to let you know that we would be starting our preparation to construct the ventilation shafts at the lower level of the Mandeville Road site.

From 16 October to 4 December 2022, we will be working 7 days a week to install grouting.

This work will coincide with weekend overnight track works which we will run from 15 October to 17 December 2022. To view this notice please click here

Utilising this time when we are already working on the tracks next to site will allow us to progress with the grouting at the same time.

Grouting will involve boring small holes into the ground with a piling rig and injecting the grout under pressure into the ground.

The grouting will help to hold back the sub surface water during excavation of the vent shaft by filling any underground cracks. The excavation will start in early 2023.

The piling rig will be positioned at the lower level of site and stands 15 metres tall.

We would like to apologise in advance for any disruption or inconvenience this may cause. Every effort is being taken to ensure that these works are carried out in the least impactful way.

We will ensure that disruption is kept to a minimum.

Download information relating to these works

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]