HS2 earth conveyor construction works

HS2 Works Notification: Construction of TBM conveyor north of the Chiltern Line 

Over the coming months, we will be carrying out works to construct and install the conveyor that will transport earth excavated from the tunnels at West Ruislip Portal to the treatment area, south of the Chiltern Line railway and the Copthall Tunnel for backfill.

From 27 March to 1 July 2022, we will start constructing the foundation base and assembling the conveyor along the northern side of the Chiltern Line.  You will be able to find more detail about working hours, precise locations and description of these works via the link below.

https://www.hs2.org.uk/work-items/construction-of-the-tbm-conveyor-north-of-the-chiltern-line/

What we are doing
Over the coming months, we will be carrying out works to construct and install the conveyor that will transport earth excavated from the tunnels at West Ruislip Portal to the treatment area, south of the Chiltern Line railway and the Copthall Tunnel for backfill. The area is shown on the map overleaf.

From 27 March to 1 July 2022, we will start constructing the foundation base and assembling the conveyor along the northern side of the Chiltern Line. This will require us to install four bridges, as shown overleaf.

Due to the proximity of these works to the Chiltern Line and for safety reasons, some activities will be carried out at night when trains are not running.

The first excavated earth from the tunnel will be stored in a designated area within the site boundary at West Ruislip Portal until November 2022. This will allow us to complete the construction of the conveyor up to the treatment area. The excavated earth will also be used for landscaping the golf course.

Upcoming works

 27 March to 4 April 2022 Monday to Saturday 8am to 6pm and Monday to Friday 10pm to 7am – North of the Chiltern line between Harvil Road and Breakspear South:

  • Preparation works and installation of abutments and bridges using a crane to lift into place during overnight rail possession

4 April to 6 May 2022 Monday to Saturday 8am to 6pm and Monday to Friday 10pm to 7am – East of Breakspear Road South and west of the River Pinn:

  • Excavation works for the foundation base installation

30 May to 8 June 2022 Monday to Saturday 8am to 6pm and Monday to Friday 10pm to 7am – North of the rail bridge at Breakspear Road South:

  • Lift and install the conveyor bridge over the road. A temporary road closure will be in place to ensure the installation can be carried out safely

25 April to 23 May 2022 Monday to Saturday 8am to 6pm and Monday to Friday 10pm to 7am – River Pinn, north of the Chiltern Line:

  • Excavation works for the foundation base installation

6 to 15 June 2022 Monday to Saturday 8am to 6pm and Monday to Friday 10pm to 7am – River Pinn, north of the Chiltern Line:

  • Lift and install the conveyor bridge over the River Pinn

4 April to 6 May 2022 These activities will be 24/7 West Ruislip portal – Internal rail track overbridge:

  • Excavation works for the foundation base installation, each side of the internal rail track west of the portal

2 to 7 May 2022 These activities will be 24/7 West Ruislip portal – Internal rail track overbridge:

  • Lifting of the conveyor bridge over the internal rail track

28 March to 27 May 2022 Monday to Saturday 8am to 6pm and Monday to Friday 10pm to 7am Extended storage conveyor area:
for maps etchttps://assets.hs2.org.uk/wp-content/uploads/2022/03/ANL-Construction-of-the-TBM-conveyor-north-of-the-Chiltern-Line-March-2022-.pdf