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Technical Articles

A Sensitive Tunnelling Project Beneath Leicester City Centre
Severn Trent Water has embarked on the construction of a new 1.4km long, 1,500mm internal diameter pipeline, diverting combined waste and stormwater discharges into Leicester�s Abbey sewer.

Collaboration Is Critical In Planning A Cut And Cover Tunnel
A 2km cut and cover tunnel is being constructed to hide this section of the A303 road in a most sensitive and visible area near Stonehenge.

Floating 57,000t Tunnel Sections Across Busy Shipping Lanes
Report on the Oresund immersed tube tunnel.

How A Road Tunneling Project Can Work Within Noise And Vibration Constraints
The largest road tunnel construction in Sweden faces tough constraints on noise and vibration. Richard Bennett discovers how engineers are keeping the locals happy.

The Influence of Tunnel Excavation on the Hydraulic Head
In this paper an alternative method is proposed for computing the effect of tunneling on the piezometric head field during construction.

Monitoring A Major Tunnelling Project Beneath Some Of London's Most Well Known Buildings
Monitoring during construction of London�s Jubilee Line Extension created important case studies for urban tunnelling.

Overcoming Tunnelling Challenges In Italy
Tunnelling on the Bologna to Florence high speed railway link is having to cope with a wide variety of geological hazards and has led to adoption of a innovative design method.

Preparations For Huge Tunnel Jacking Operation
The jacked tunnels must pass under the eight railway tracks that carry nearly 41,000 commuters and up to 3,000 long distance Amtrak passengers daily in and out of Boston's South Station. Clearance is a mere 2.5m to 9m below the tracks...

Tight Controls In Harbour Tunnelling
It might be thought that driving a tunnel over 14m in diameter would give you a margin for error in proportion to its size. And that a tunnel boring machine the size of a small block of flats would handle like the civil engineering equivalent of a supertanker.

Tunnel Groundwork Progresses at the Double
Bauer Spezialtiefbau has used its double-head rotary drilling system to form the secant piled retaining walls for a future highspeed rail tunnel link to the new Terminal 2 at Munich Airport in southern Germany.

Tunnel Strengthening During A Short Possession Period
The piling rigs are pulling out of London Underground's Covered Way 58 as Kvaerner Cementation's �380,000 underpinning contract nears its end...

Tunnelling: Mechanics and hazards
Tunneling is one of the most hazardous projects in engineering and construction. It is also one of the most expensive. For this reason, extensive planning and surveying goes into the pre-excavation stage of the project...

Use Of A Cofferdam To Repair A Damaged Tunnel
TUNNELLING CONTRACTOR Nishimatsu has confirmed that it will carry out a Heathrow Express-style cofferdam repair to the Docklands Light Railway extension tunnel wrecked by a compressed air explosion.