http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 14.33Change: -0.01
R/$ = 10.68Change: 0.00
Au 1295.35 $/ozChange: 13.10
Pt 1465.50 $/ozChange: 4.50
 
 
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?








Start
 
End
 
 
And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
 
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Contact Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Dec 13, 2007

Gautrain to start tunnelling with ‘Imbokodo' machine in January

Back
Construction|Johannesburg|Pretoria|Africa|Gautrain|PROJECT|Road|Rosebank|System|Tunnelling|Africa|Germany|South Africa|Gautrain|Park Station|Electricity|Tunnelling|Gautrain|Gautrain|Infrastructure|Jack Van Der Merwe|Mbazima Shilowa|Power|R300
Construction||Africa|Gautrain|PROJECT|Road|System|Tunnelling|Africa||Gautrain||Tunnelling|Gautrain|Gautrain|Infrastructure|Power|
construction|johannesburg|pretoria|africa-company|gautrain-company|project|road|rosebank|system|tunnelling-company|africa|germany|south-africa|gautrain-facility|park-station|electricity|tunnelling|gautrain-organization|gautrain|infrastructure|jack-van-der-merwe|mbazima-shilowa|power|r300
© Reuse this Tunnelling its way 3-km from Rosebank station to Park station in central Johannesburg, will be the Gautrain's very own R300-million tunnel boring machine (TBM) - ‘Imbokodo' - which was designed and custom built in Germany, by Herrenknecht engineers, specifically to cope with the complex underground geological conditions south of Rosebank.

Set to start tunnelling in January 2008, the 145-m long, 885 t Imbokodo, with its 13 gantry trailers, is expected to take 14 months to tunnel the 3-km, and will work 24 hours a day, seven days a week.

‘Imbokodo' (literally, ‘the hard rock that grinds') was the name chosen for South Africa's TBM, in the spirit of the women who marched to Pretoria in 1956 singing "Wathina abafazi, wathina imbokodo" ("If you strike a woman, you strike a rock").

Traditionally, tunnel boring cannot start until local people have chosen a suitable name for the TBM, which, according to custom, and to signal good luck for the project ahead, must be a woman's name.

Gautrain Management Agency CEO Jack van der Merwe said that the name Imbokodo was a symbol of South Africa's heritage of willpower in its drive to overcome obstacles.

The TBM, which uses electricity as its power source, took 12 months to design and build. At the front of the machine is a rotating cutting wheel, which excavates the ground, and behind the wheel is a chamber where the excavated material accumulates, before being extracted by a pressure relief discharge system called a ‘screw conveyor'. Excavated soil is then transported on a conveyor belt back up to the Rosebank south shaft, where it will be picked up by tipper trucks.

Urban tunnelling requires that the ground surface is left undisturbed, particularly since it has to be done below deep infrastructure foundations. A computerised guidance monitoring system is used to steer the machine accurately underground.

The trenchless closed construction method has its advantages, and life above ground will continue with no economic losses, no road diversions and traffic disruptions. Noise pollution and dust can be avoided, and no groundwater lowering is necessary. Construction is largely independent of weather conditions.

Once the tunnel linking Rosebank and Park stations is complete, it is unclear what will become of Imbokodo - it could be left underground once its work is finished, or, if economically feasible, it could be made available for use on another project elsewhere in the world.

As the machine cannot move backwards, getting it out from underground could prove very costly, and it is a possibility that "once she has submerged into the belly of the earth it is better to let the old lady lie there when her work is finished", Gauteng premier Mbazima Shilowa commented at the naming ceremony.

Edited by: Mariaan Webb
© Reuse this Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other Rail News
Public Enterprises Minister Lynne Brown
Updated 5 hours ago Public Enterprises Minister Lynne Brown is to study the Pretoria High Court’s judgement regarding a class action suit against Transnet. This after the high court, on Thursday, granted an order to two pensioners to launch a class action suit on behalf of...
Article contains comments
Passenger Rail Agency of South Africa (PRASA) has “declared war” on acts of vandalism and malicious damage to its rail property, following “callous” acts of vandalism in the Western Cape, PRASA Rail CEO Mosenngwa Mofi said on Wednesday. According to Mofi,...
Reiterating its committment to fulfilling local content requirements during the servicing of the R51-billion rolling stock contract awarded to it by the Passenger Rail Agency of South Africa (PRASA), South African rail company Gibela has preselected nearly 100 local...
More
 
 
Latest News
Updated 13 minutes ago July new vehicle sales declined by 1.5%, to 57 670 units, compared with the same month last year, reported the Department of Trade and Industry on Friday. The South African new passenger car market, at 39 945 units, shrunk by 418 units, or 1%, compared with July last...
Updated 1 hour 12 minutes ago Changes had to be made in South Africa’s water and sanitation sector to ensure challenges were resolved effectively, as well as to fast-track the country’s socioeconomic transformation, Water and Sanitation Minister Nomvula Mokonyane told delegates at the 2014...
Updated 1 hour 29 minutes ago Steel producer ArcelorMittal South Africa (AMSA) has confirmed that the reline project at its Newcastle mill, in KwaZulu-Natal, has hit snags and that the project, which was initially expected to be completed four months after the May 12 shutdown began, will be...
More
 
 
Recent Research Reports
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
Real Economy Insight: Automotive 2014 (PDF Report)
This four-page brief covers key developments in the automotive industry over the past 12 months, including an overview of South Africa’s automotive market, trade figures, production and the policies influencing the sector.
Real Economy Insight: Construction 2014 (PDF Report)
This five-page brief covers key developments in the construction industry over the past 12 months. It provides an overview of the sector and includes details of employment in the sector, infrastructure and municipal spending, as well as insight into companies’...
Real Economy Insight: Electricity 2014 (PDF Report)
This five-page brief covers key developments in the electricity industry over the past 12 months, including details of State-owned power utility Eskom’s generation activities, funding and tariffs, independent power producers and prospects for the sector.
Real Economy Insight: Road and Rail 2014 (PDF Report)
This six-page brief covers key developments in the road and rail industries over the past 12 months, including details of South Africa’s road and rail network and prospects for both sectors.
Real Economy Insight: Steel 2014 (PDF Report)
This four-page brief covers key developments in the steel industry over the past 12 months. It provides an overview of the global and South African steel and stainless steel markets, South Africa’s major steel producers and events that have shaped these markets.
 
 
 
 
 
This Week's Magazine
South African construction company Group Five says work on the rehabilitation of the 800 km stretch of the Plumtree–Mutare highway, in Zimbabwe, should be completed by the end of this year. Giving evidence before the Parliamentary Porfolio Committee on Transport...
SINGLE EXPERIMENT An artist’s impression of OCO-2 in orbit
The Space Operations division of the South African National Space Agency (Sansa) revealed on July 17 that it had supported the successful launch of the US National Aeronautics and Space Administration’s Orbiting Carbon Observatory-2 (OCO-2) satellite on July 2. The...
RICE TAG The real costs of operating Rea Vaya have become clear
Phase 1A of Johannesburg’s Rea Vaya bus rapid transit (BRT) system should carry around 42 000 people a day, while it was been expected that Phase 1B, rolled out last year, would add another 60 000 daily passengers. However, the entire system is currently carrying...
A stormwater project in Bedforview, east of Johannesburg, has stalled for eight months after project managers in the Ekurhuleni municipality resigned and municipal managers were placed on special leave without designating replacements. Construction to reinforce the...
The design of the Beit Bridge border post is the biggest impediment to efficient freight movement between Zimbabwe and South Africa, says Cross-border Road Transport Agency CEO Sipho Khumalo. Beit Bridge is the busiest border post in Africa. A research study on the...
 
 
 
 
 
 
 
 
 
Alert Close
Embed Code Close
content
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
 
 
Close
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks