Search Results: 'Wirth'

Marine shaft construction with outfall tunnel connection
29 December, 2022
The Musaimeer outfall project in Qatar had many interesting technical aspects and construction challenges. In this feature, the second feature of the project by Gary Peach, and along with Khalid Saif Al-Khayareen, the works needed to build an offshore shaft that would be intercepted by a TBM, then to be buried, are discussed.

TBM challenges on a demanding sea outfall
14 April, 2022
Gary Peach, project manager and consultant with Mott MacDonald (Doha, Qatar) discusses the challenges and management deployed to overcome and successfully complete what has been hailed as the Middle East’s longest storm and groundwater tunnel

RETC RAISES THE CONFERENCE BANNER
30 April, 2021
Following the interruption to the tunnel conference scene caused by the pandemic, the RETC Conference is back and – Covid allowing – looks set to take place in Las Vegas on 13-16 June 2021

The new network
14 August, 2019
Alex Conacher travelled to Changsha, China, to meet with a number of Chinese manufacturers as, spurred on by an enormous China-led investment programme, they take a more international approach to their businesses

International Iberia
10 April, 2019
Paola De Pascali interviews Spanish infrastructure companies and the Spanish Association of Tunnels and Underground Works to understand how the financial crisis affected the tunnelling industry and how the companies became active abroad, getting a strong presence on the international tunnelling market.

Metropolitana Di Napoli
21 September, 2018
Paola De Pascali talked to Giuseppe Molisso, Ansaldo’s project director, about challenges met during construction of Naples Metro Line 6, situated in a dense historical and artistic environment

The Koralm connection
22 January, 2016
Austria’s Koralm tunnel is part of a new alpine link in Europe. Keren Fallwell reports

The move to mechanisation
23 September, 2015
It is in base tunnels that the TB M can really come into its own. Adrian Greeman reports

Growing underground
11 December, 2013
Ever more efficient mine development infrastructure, and geotechnical planning, are key to expanding production at major mines. Report by Patrick Reynolds

Inroads below
04 December, 2013
TBMs, hybrids, and pipejacking technology are finding greater applications and opportunities in mining, reports Patrick Reynolds

Aker Solutions sells German mining and construction assets
02 December, 2013
Aker Solutions agreed to sell its German Aker Wirth tunnel-boring and shaft-boring technology to China Railway Tunneling Equipment (CRTE), as part of a plan to divest assets that do not fit with its main offshore-services strategy, the company announced yesterday.

Chilean mining company awards MTM contact
30 January, 2013
A contract for the delivery and testing of a Mobile Tunnel Miner (MTM) has been confirmed between Aker Wirth and Codelco, the world’s largest producer of copper. The contract, which was signed at the end of 2012, will see the machine tested from mid-2014 in the Chuquicamata mine in Chile where the underground mining of copper is planned for the future.

Which ever way you slice it
27 December, 2012
It is easy to get ‘tunnel vision’ in examining the possible methods of excavation. If engineers were happy with that then disc and roller cutters for hard-rock TBMs would never have been developed as an alternative to drill and blast. Maurice Jones asks what has been tried before and what might still be valid

On the cutting edge
27 December, 2012
The process of mechanical excavation through dry ground, whether hard or soft, is pretty well understood. For ‘mixed’ ground, of whatever form, it is a different matter, especially if it is deep under groundwater. Maurice Jones reports that there is a consequent rush of TBM cutter development activities to gain the best competitive, and cutting, edge

First TBM delivered for Austrian railway system
12 September, 2012
The first of two TBMs for Austria's Koralm line project, which will provide a new high-speed train route between Graz and Klagenfurt, was delivered in August 2012. The Aker Wirth machines will be in operation by the end of this year, the company announced last week.

New tunnel boring system heads to Australia
10 July, 2012
A new tunnel boring system, the Mobile Tunnel Miner (MTB), is due to arrive at Northparkes Cooper Mine in southeast Australia next month ready for its use in underground mines.

Finishing India’s longest
18 June, 2012
Following tunnel excavation breakthrough last September, and the final blast in April this year, work is continuing on the long and notoriously difficult Panjal railway tunnel in India to complete support lining including some necessary ground reinforcement work. Maurice Jones reports on the latest progress

Einar Bronlund new boss at Aker Wirth
02 March, 2012

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

Number four goes forth
15 June, 2011
Bhaskar Thapa of Jacobs Associates and Axel Nitschke of Gall Zeidler Consultants report on progress at the Caldecott fourth bore project