2016-05 ooc presentation 100516-1

8/17/2019 2016-05 OOC presentation 100516-1

1/26

Old Oak Common overview


2/26

2

Overview

Construction Programme

Phase 1 – enabling works

Phase 2 – Tunneling prep, conveyors and Victoria Road widening

Phase 3 – Civil engineering works & compoundsPhase 4 – CrossrailTurnback, flyover and tunneling

Phase 5 – Tunneling and GWML works

Phase 6 – Fit out and commissioning

Operational Phase – OSD, location


3/26

3

Indication of current construction programme


4/26

4

• Environmental surveys

• Ground investigation

• Utility protection and diversion works

• Demolition and site compound

preparation

• Old Oak Common Station

• Victoria Road tunnel drive

• Victoria Road crossover

• Atlas Road

• Euroterminal

Phase 1 – Enabling works


5/26

5

• Retaining wall/diaphragm wall construction

•Bulk excavation of eastern end of station box

• Bulk excavation of western end of crossover box

• Conveyor system to Atlas Road and

Euroterminal

• Establish precast segment factory

• Convert Willesden Euroterminal railhead

• Victoria road widening

• Ready for tunnelling

Phase 2 –Tunnelling preparation


6/26

6

OOC conveyors

Old Oak Common Laneconveyor

• 2020-2023

• 0800-1800 Mon-Fri

0800-1300 Sat

Victoria Road conveyor• 2019-2023

24/7 (potentially)


7/267

Victoria Road conveyor


8/268

Excavated materials (EM) conveyor

• A specialist system of EM conveyors will be used to handle excavated material

from tunnelling and box excavation to a surface disposal point

• The assessment of the construction noise in the Environmental Statement took

into account noise from the proposed conveyors

• Typical mitigation could include in line with draft Code of Construction Practice:

• Maintenance including lubrication of the rollers

• Limiting drop heights for loading and unloading

• Locating motor units away from sensitive receptors

• Partial or full enclosure of drive units and belt near sensitive receptors

• Damping down material to avoid dust creation


9/269

Insert conveyor slideMitigation examples


10/2610

Potential widening of Victoria Road

• LB Ealing have put forward a proposal not to widen Victoria Road for HGV

movements, instead their proposal is to widen the road to include a cycle lane.

HS2 is reviewing the proposal and will report back to LB Ealing on its outcomes in

May 2016.


11/2611

• Logistics tunnel to Atlas Road compound (24-

hour working)

• Bulk excavation of station and crossover boxes

• Construction of Old Oak Common tunnels (24-

hour working)

• Demolition of Heathrow Express depot

Phase 3 –Civil engineering works


12/2612

Willesden Euroterminal Main Compound – indicative site layout


13/26

13

Victoria Road tunnel main drive and crossover box

Offices and staff welfare

Storage

Site workshops

Circulation


14/2614

• Complete box excavation of station box

• Crossrail turnback tracks

• Flyover/viaduct construction

• Construct Euston and Northolt tunnels (24-hour

working)

Phase 4 –Civil engineering works and tunnelling


15/26

15

Requirement for GWML Up-Relief Flyover

• Under additional provision 2 (AP2) to the bill, HS2 Ltd promotes turnback sidingsalong the Wycombe rail corridor which also provides passive provision for a WestCoast Main Line to Crossrail link if promoted in the future.

• Three turnback sidings are provided to enable up to 12 Crossrail trains per hour

(tph) to turn back at Old Oak Common station.

• In addition AP2 promotes a flyover on the Great Western Main Line Up-Relief toprovide a grade-separation junction to avoid conflicting movements betweenCrossrail train turning back and other services.

•

Network Rail supports HS2 Ltd’s assessment that a grade separated junction isnecessary. The intensity of use of this junctions in both directions is likely topresent a significant risk to train operations due to conflicting train movements.


16/26

16

Turnback/viaduct/sub-station plan


17/26

17

Turnback/viaduct/sub-station section 1 & 2


18/26

18

Turnback/viaduct/sub-station section 3


19/26

19

Great Western Main Line Up-Relief Line

Flyover - visualisation

Wells House Road

The Flyover structure is a maximum of 18m above Old Oak Common

Lane and approximately 10m above the existing GWML rail level

Ph T lli d GWML k


20/26

21

• Construct Northolt tunnel• Construct Euston tunnel• Old Oak Common Great Western Main Line

station• trackwork

• bridge works

Phase 5 –Tunnelling and GWML works

Ph 6 Fit t d i i i


21/26

22

• Fit-out Old Oak Common station andVictoria Road crossover

• Fit-out railway• Close and lower Old Oak Common Lane for

up to one year starting last quarter of 2025

Phase 6 – Fit-out and commissioning


22/26

23

Old Oak Common Lane lowering

• Lowering of Old Oak Common Lane under GWML bridges required to provided

improved headroom and enable access for double-decker buses via Old Oak

Common Lane south of the station

• Construction works will start in last quarter of 2025 (post peak of construction

activity) and are expected to last 12 months with a 2m walkway maintained

• Indicative cross section of the works provided below


23/26

24

Old Oak Common Lane lowering

• The works will involve the strengthening of the existing

boundary wall between Wells House road and Old Oak

Common Lane.

• Infrequent temporary access to the back garden of

approximately 25 properties is required for baseline

surveys. The majority of the construction works will be

undertaken from Old Oak Common Lane.


24/26

25

Potential Over-site development at Old Oak Common

• Oversite development (OSD) is potential development, not included in the

scheme being proposed by HS2 Ltd that may be promoted by others, either over

the high speed railway or on the land returned after construction. This will require

separate planning permissions, supported by a separate environmental

assessment.

• HS2 Ltd is in discussion with the Old Oak and Park Royal Development

Corporation on the potential of amending the design of the station so as not to

preclude future OSD development .


25/26

26

Old Oak Common station – location & entrance

• As set out in paragraph 66 of the Promoter’s Response to the Select Committee’s

Second Special Report of Session 2015-16:

‘In developing its detailed design and construction plans, and as part of its efforts to

mitigate, as far as reasonably practicable, the impact of the Proposed Scheme onresidents of Wells House Road, the Promoter will consider a range of options for thelocation of the vehicular entrance to the Old Oak Common Station main compound

from Old Oak Common Lane.’

Other mitigation measures will reduce construction effects such as noise, light and

air pollution so far as reasonably practicable, in accordance with the Code ofConstruction Practice.’

Operational phase


26/26

Operational phase

2016-05 ooc presentation 100516-1

Documents