E
r
UCTU
r
AST
F
r
I
n
16
“ The terminal pumping station is Belfast’s largest & deepest excavation at
40 metres in depth and 38 metres in diameter. Its completion represents a
major milestone for the project.”
Atkins developed a 40,000 node Infoworks model to nIW. In addition, the potential adverse effects from
assess the hydraulics for the Belfast catchment area construction activities are being minimized through
which includes 11 pumping stations, 116 combined implementing an Environmental Management System
sewer overflows and approximately 1,000 km of to ensure that environmental factors are taken into
sewers. The model was utilised to optimise the account and monitored as construction progresses.
tunnel system including the tunnel size, connection
points and sizing of the terminal pumping station. The project team includes joint venture contractors
Furthermore, confidence in the new model allowed Morgan=Est/Farrans who commenced construction
Above: The terminal pumping
the tunnel designers to improve tunnel storage, in September 2006. To date some 3km of tunnelling
station is the project’s largest
minimising the volume of spill that is discharged into and the construction of 20 shafts have successfully
excavation.
the Belfast Lough. been completed in the difficult mixed fluvial glacial Far left: Moments after
ground conditions which are typically prevalent
breakthrough of a 4 metre
tunnel boring machine.
The improvements to the design, from using the throughout the Belfast area. The project is due to
upgraded model, have brought significant savings for be completed in 2010. n Left: View of a completed tunnel.
Autumn 2008 | solutions
Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24