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Thames Tideway Tunnel – Greenwich Interconnection Tunnel

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The Greenwich Interconnection Tunnel is a branch tunnel that splits from the Main Thames Tideway Tunnel at Chambers Wharf and goes by way of Earl Pumping Station and Deptford Church Street to Greenwich Pumping Station, from where it will be bored. This map shows the route of the tunnel.

 

Greenwich Interconnection Tunnel

Greenwich Interconnection Tunnel

It would appear that the tunnel is being dug in a single go from Greenwich to the Thames, with most of the route deep under the Greenwich Rail Line.

This Google Earth image shows the rail line between Greenwich and Deptford station.

Deptford To Greenwich Station

Deptford To Greenwich Station

The works on Deptford Church Street are just to the north side of the rail line in part of the green space and those at the Greenwich Pumping Station are to the south of the junction, where the DLR branches south from the rail line.

The next site at Earl Pumping Station is just off the main map at the left.

On the page for the Greenwich Pumping Sration, Thames Water say this.

In our application for development consent this site is used to drive the Greenwich connection tunnel, a long connection tunnel which connects the combined sewer overflows (CSOs) at Greenwich Pumping Station, Deptford Church Street and Earl Pumping Station to the main tunnel at Chambers Wharf.

So it looks like Thames Water are sneaking the tunnel into Chambers Wharf.

I doubt they’ll be much disruption from the actual boring of the Greenwich Interconnection Tunnel, as it’ll all be dug from Greenwich from a site with water access. As the tunnel is being bored towards Chambers Wharf, it would seem likely that the large amount of tunnel spoil created will be loaded on barges at Greenwich and taken away for disposal, with little disruption to anybody. It would appear to be a smaller version of the system Crossrail used on the Limmo Peninsular in East London.

May 12, 2015 Posted by | World | , , , , | 3 Comments

Thames Tideway Tunnel Site – Greenwich Pumping Station

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Greenwich Pumping Station is an existing Grade II Listed works and is being used to drive the Greenwich Interconnection Tunnel to Chambers Wharf. The Pumping Station lies alongside Deptford Creek, underneath the DLR and the Greenwich Rail Line. This Google Earth image shows the area.

Greenwich Pumping Station

Greenwich Pumping Station

The DLR is the rail line that bends along the Creek and the Pumping Station is to the right. These are some pictures I took of the Pumping Station.

Some were taken from the DLR and they give a good view of the site.

This is another picture that was clipped from the Thames Tideway Tunnel website, which shows how it will look when complete.

Greenwich Pumping Station

Greenwich Pumping Station

The DLR is shown in the foreground and the picture is looking south.

Thames Water say this about the Greenwich Pumping station on the Thames Tideway web site.

Work includes construction of underground structures to connect the CSO to a shaft approximately 46 metres deep with an internal diameter of approximately 17 metres. This shaft will be built within the existing Greenwich Pumping Station compound to the north of the existing pumping station building. The existing Grade II listed East Beam Engine House will be refurbished to house ventilation equipment and electrical and control panels.

Hopefully, this is one of the few sites on the Thames Tideway Tunnel, where some quality visual architecture can be employed. The area between the the Pumping Station, the railways and Deptford Creek could be turned into a leisure area bookended by the Grade II Listed Pumping Station and the Deptford Creek Lift Bridge.

This architectural drawing was clipped from the Thames Tideway Tunnel website.

GreenwichPumping Station Plan

GreenwichPumping Station Plan

To my untrained eye, it looks like the only new construction between the Pumping Station and the railway lines is the shaft that reaches down to the Greenwich Interconnection Tunnel. Will this be flat in the concrete or an odd shape that can’t be used for anything else? But even so there is a lot of space there to create something worthwhile for residents and visitors.

I also can’t believe that the locals will be too inconvenienced during construction. The builders may have problems because of the DLR viaduct, but in London cramped sites are something to which you get used.  The builders have also got good water access for difficult supplies and taking out the tunnel spoil.

I also feel, that there might be some excellent views of the construction from the DLR, as most of the heavy work will take place, like the insertion of the tunnel boring machine, in full view of Lewisham-bound trains.

May 11, 2015 Posted by | World | , , , , | 4 Comments