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Request for Information - Low Disruption Tunnel Renewals
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Descriptions
Network Rail manages 693 Tunnels that are typically 150 years old. They are built through different geologies and require different but increasing levels of maintenance and renewal. As the growth of railway traffic continues, access for maintenance and renewal reduces. To counter this trend, Network Rail are looking for innovative ways to form new tunnels. Also, to enlarge or renew significant elements of existing tunnels. The key requirement is to achieve this with minimal blockades where all traffic movements through the tunnel are stopped. At present, new tunnels are formed using large plant such as tunnel boring machines (TBMs) and other renewals use track-mounted plant. All require a significant duration of time where the railway is closed. As the existing tunnel portfolio continues to degrade, these interventions are more probable, causing disruption to our passengers. The aspiration is to find new ways of renewing our tunnels to reduce this impact to our passengers.
Timeline
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Tender Regions
CPV Codes
45221200 - Construction work for tunnels, shafts and subways
45221242 - Railway tunnel construction work
43123000 - Tunnelling machinery
45221247 - Tunnelling works
45221240 - Construction work for tunnels
45221000 - Construction work for bridges and tunnels, shafts and subways
45221248 - Tunnel linings construction work
Keywords
TBMs
TBM tunnelling
subway build
tunnel shafting
tunnel boring
tunnelling works
trenchers
rail tunnel construction
subterrain tunnel work
structural lining work
tunnel excavation works
cross-mountain tunneling
internal tunnel finish
tunnel construction
substructure works
tunnel boring projects
train tunnel build
shaft excavation work
shaft erection work
train passage tunnel
rail cut-and-cover
civil buried structure
rail transit tunnel
mining tunnellers
civil tunnelling project
shotcrete tunnel lining
subterranean civil work
concrete tunnel lining
rock-boring for tunnels
urban transit structure
tunnel boring machines
track tunnel excavation
lining system build
bore construction
tunnel excavation
sub-surface civil works
road/rail tunnel work
subway tunnel erection
tunnel lining work
civil tunnel engineering
viaduct and underpass building
transportation passage construction
sub-surface structure build
overhead and underground crossing construction
tunnel façade installation
rail underpass construction
underground passage build
reinforced lining erection
tunnel lining construction
underground drive construction
metro infrastructure build
subterranean rail structure
tunnel and shaft engineering
waterproof tunnel coating
underground passage construction
underground excavation machines
tunnel interior structure
underground transit tunnel build
subterranean transit work
bridge and tunnel construction
tunneling and bridging build
civil crossing facilities
railway subsurface engineering
Workflows
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Details
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