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London Bridge Jubilee Line Extension

Service Performed
Detailed temporary and permanent lining design, settlement assessment and construction supervision.
Commencement - Services
November 01, 1994
Completion - Services
June 29, 1997
21 Duke Street Hill
United Kingdom
United Kingdom
Technical data

Temporary shotcrete lining design of running tunnels, step plate junction, temporary works access tunnels, shafts, platform and concourse tunnels and ventilation tunnels. Permanent lining design, reinforced concrete and steel fibre reinforced shotcrete.

Geology description

Made ground, alluvium / terrace gravels, London Clay, Woolwich & Reading Beds.

Geology types

London Bridge is a major new station on the 16km long Jubilee extension of London Underground. The vicinity of construction is considered highly sensitive due to old existing tunnels and surface structures. The original design called for hand mining, shield machines for excavation and a segmental cast iron lining for tunnel support. NATM handled the geometrically complicated tunnel alignments and shapes with significantly lower effort. It minimised settlements, which reduced the amount of compensation grouting estimated.

Final cost
Complex underground station arrangement
Excavation of tunnel junction
Cross Sections
Bottom of the Access Shaft
Step Plate Junction
Construction of Intersection
Finished Reinforced Concrete Lining
Project number
Final cost
£120 million GBP