Search Results: 'Robbins'

Mexico’s mega dig
26 December, 2011
Work is underway on Mexico’s largest infrastructure project: the Emisor Oriente. Robbins vice president Joe Roby and Mexico general manager Roberto Gonzalez explain how the wastewater tunnel will save a sinking city

Boom to meet needs
26 December, 2011
The economies of Latin American countries are bucking the global trend and are the strongest they have been for many years. Nicole Robinson and Maurice Jones highlight some market factors and important projects in this increasingly important region for tunneling

Crossroad metro
10 November, 2011
A major underground metro development programme is underway in Zhengzhou, central China, which is set to become an even more important city hub in the national rail network, reports Patrick Reynolds

Pinglu’s pipe
10 November, 2011
The latest stage of the Yellow River Diversion Project in China, was undertaken by a single TBM on a long drive through difficult ground conditions, reports Patrick Reynolds

Tunnelling below China’s ancient past
10 November, 2011
Below the city made world famous by the 1974 discovery of the Terracotta Army, tunnellers tread carefully to avoid disturbing other historical wonders of the 3,100-year-old resting place of the first Emperor of China, Qin Shi Huang. Desiree Willis, Robbins technical writer, presents this report

In the belly of the beast
10 November, 2011
T&TI cuts through the bureaucratic smoke and mind-boggling statistics to unearth what it means to set up shop in the world’s fastest growing superpower. Alex Conacher enters the dragon’s lair to speak with Paul Jenkins of Mott MacDonald and Gary Ge of Arup

Raisebore upgrade drives Edilmac on
10 November, 2011
Specialist contractor Edilmac dei Fratelli Maccabelli has been busy putting to work an upgraded Atlas Copco Robbins 73R with a new variable frequency drive and other package components. Maurice Jones reports from Edilmac’s headquarters and the Sedrina limestone mine in Bergamo, Italy

Precast in practice
18 October, 2011
Water shortages, rogue quarries and supply constraints are tackled at the Peenya precast plant in India. Alex Conacher speaks with Yogini Vimalanathan of Mott MacDonald and Russell Brown of CEC

Holding back to push forward
21 July, 2011
A TBM smashed by monsoons and a face so hard that at maximum thrust it was worn smooth as glass. Jon Young delves in to the challenges of delivering the longest tunnel without intermediate access in the world

Bangalore’s first bore
20 July, 2011
The first slurry TBM to be used in India has launched on the Bangalore east-west metro. Jon Young attends the launching ceremony

Changing envelopes
15 June, 2011

Choices for excavation–part 2
15 June, 2011
In this second and final part of our review of the extended capabilities of modern tunnel excavation methods, we examine the leading role of tunnel boring machines. Maurice Jones contacted some leading TBM manufacturers for their views and developments to expand the envelope of capabilities

Complexities of conveyance
15 June, 2011
Robbins technical writer Desiree Willis argues why continuous conveyors work in tough TBM-driven tunnels

Big Becky’s big day
14 June, 2011
After a 10.4km drive full of ups and downs—literally and figuratively speaking—the TBM mining the Niagara Tunnel has made its final breakthrough. Nicole Robinson was there to see it happen

Small diameter, big impact
13 April, 2011
Building the Bi-County Water Tunnel will bridge a gap in the east coast water system. One of the two drives has been completed for the compact, but deep alignment. Robbins technical writer Desiree Willis reports

Would Archimedes recognise it?
13 April, 2011
It’s come to our notice at T&TI that some people think the auger screw conveyor found in earthpressure- balance (EPB) TBMs, also known as EPBMs, is the same as Archimedes invented. Even though the great man is surely past worrying about patent disputes, the open-ended screw and ancillary equipment is actually a sophisticated assembly of hardware, in common with the rest of modern EPB TBMs. As such it is a suitable subject for the second in our series of ‘How it works’ features. Report by Maurice Jones

Singapore sting
13 April, 2011
TBM firms on new metro projects in Singapore are being asked to provide performance bonds direct to the client that can be called on in the event of a dispute during construction, regardless of who is at fault. John McKenna reports

Not a job for everybody
14 March, 2011

India: Now or never
14 March, 2011

Earth pressure education
14 March, 2011
Soft ground tunnelling experiences are guiding new TBM designs. Robbins technical writer Desiree Willis explains