Crossrail launches first TBM for Thames crossing Jan 2013
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- The first of two slurry Mixshields that will excavate 2.6km of twin-running tunnels under the River Thames in London for Crossrail is launched.
TBM Sophia launches for River Thames crossing
- The launch of 7.1m diameter TBM Sophia from the Plumstead shaft for the Hochtief/ Murphy joint venture means that five of the eight Herrenknecht machines that will excavate more than 40km of tunnels under London are now in the ground.
- To date just over 4km has been completed, and five of the 10 drives are now under way. Sophia's sister machine Mary, which will excavate the parallel tunnel under the River Thames, is scheduled for launch in the middle of this year (2013).
- TBMs Phyllis and Ada, the first pair to be launched for the BAM Nuttall/ Ferrovial Agroman/ Kier (BFK) joint venture in May and August last year (2012), have already achieved 2,050m (Phyllis) and 1,038m (Ada) of their 6.4km drives respectively.
- TBMs Elizabeth and Victoria, launched a few days apart last month (December 2012), have so far achieved just over 200m of their 8.4km drives for the Dragados/ Sisk joint venture.
Eight TBMs will complete 10 parallel drives for Crossrail
- Sophia, launched yesterday (9 January, 2013), is one of only two slurry Mixshields that have been procured for the project, the rest being EPBMs. She is specially equipped to deal with the chalk, flint and wet ground conditions that will be encountered in southeast London. The other six EPBMs will bore through mainly London Clay.
- "The launch of Sophia, Crossrail's fifth tunnelling machine, demonstrates the great progress the project is making, stimulating the economy, generating thousands of jobs during construction and delivering huge transport improvements to people living in southeast London," said Stephen Hammond, Crossrail Minister.
- "The start of tunnelling in southeast London marks another milestone for Crossrail, a project that will transform public transport in and around the capital," said Andrew Wolstenholme, Crossrail Chief Executive. "The benefits for southeast London are huge - for the first time people living between Abbey Wood and the Royal Docks will be able to travel right through the centre of the capital without having to change trains, bringing Canary Wharf, the West End and Heathrow closer than ever before."
- The Crossrail route will pass through 37 stations and run 118km (73 miles) from Maidenhead and Heathrow in the west, to Shenfield and Abbey Wood in the east. The total cost of the project is estimated at £14.5 billion (US$23.2 billion).
|Table 1. Crossrail tunnel drive details and progress|
|TBM *||Launch date||Location||Total Distance||Complete to date||Contractor|
|Phyllis (EPBM)||4 May 2012||Royal Oak-Farringdon (Drive X)||6,400m||2,050m||BAM Nuttall/ Ferrovial Agroman/ Kier|
|Ada (EPBM)||23 Aug 2012||Royal Oak-Farringdon (Drive X)||6,400m||1,038m||BAM Nuttall/ Ferrovial Agroman/ Kier|
|Elizabeth (EPBM)||29 Dec 2012||Limmo (Docklands) - Farringdon (Drive Y)||8,300m||94m||Dragados/Sisk|
|Victoria (EPBM)||12 Dec 2012||Limmo (Docklands) - Farringdon (Drive Y)||8,300m||129m||Dragados/Sisk|
|Jessica (EPBM)**||-||Limmo-Victoria Dock (Drive G)||900m||-||Dragados/Sisk|
|Ellie (EPBM)**||-||Limmo-Victoria Dock (Drive G)||900m||-||Dragados/Sisk|
|Sophia (slurry TBM)||9 Jan 2013||Plumstead-Woolwich (Drive H - under River Thames)||2,600m||-||Hochtief/ Murphy|
|Mary (slurry TBM)||Scheduled for mid 2013||Plumstead-Woolwich (Drive H - under River Thames)||2,600m||-||Hochtief/ Murphy|
|Jessica (EPBM)||-||Pudding Mill Lane-Stepney Green (Drive Z)||2,700m||-||Dragados/ Sisk|
|Ellie (TBM)||-||Pudding Mill Lane-Stepney Green (Drive Z)||2,700m||-||Dragados/ Sisk|
* All eight TBMs for Crossrail are manufactured by Herrenknecht
** TBMs Elizabeth and Victoria will complete Drive G following completion of Drive Y
An up to date version of this table (September 2014) is available here
Crossrail launches first TBM - TunnelTalk, May 2012
SCL to create Crossrail junction caverns - TunnelTalk, September 2012
Herrenknecht begins roll out of Crossrail orders - TunnelTalk, December 2011
Crossrail launches TBM interactive mapping - TunnelTalk, October 2012
All Crossrail TBMs in the Herrenknecht basket - TunnelTalk, September 2011
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