Tag: tunnels

Excavating a cross-passage for the Chiltern tunnels The 10-mile tunnel under the Chiltern hills is the longest tunnel on the new London-Birmingham rail line. Actually it is two tunnels – one for trains heading north and one south – connected by 38 cross-passages for emergencies....

Inside one of the twin tunnels under the ChilternsThe two 2,000-tonne tunnel boring machines (TBMs) have spent the last 18 months excavating twin tunnels between the M25 and South Heath in Buckinghamshire for the new London-Birmingham high-speed rail line. As well as digging and lining...

The barge cranes Rambis and Gulliver take the weight of the final head structureThe final 5,000-tonne concrete structure was towed 30 nautical miles into the Bristol Channel to meet two floating heavylift cranes Gulliver and Rambiz – which have a combined lifting capacity of 7,300...

The team celebrates the break through in HurstA 140-tonne Herrenknecht tunnel boring machine began its journey at the London Power Tunnels (LPT) site in Hurst in July 2021. She broke through in Eltham  on 21st June 2022. This is one of four TBMs on the...