Cementation Africa says it’s leveraging its a long time of expertise in shaft sinking and underground mining at Mopani Copper Mines’ Mindola shaft in Zambia – paving the best way to increase the lifetime of the Nkana mine at Kitwe and to enhance its mining efficiencies.
The scope of labor includes development and erection of the everlasting headgear together with the rope-up and commissioning of the winders to allow detailed 3D scanning of the shaft to find out alignment correction and structural reinforcement to make sure protected and environment friendly conveyance operation. As well as, the undertaking additionally consists of the set up and commissioning of an overland conveyor system.
In accordance with Ben Adendorff, Cementation Africa’s In-Nation Govt for Zambia, the main focus is on readying the Mindola shaft for manufacturing – by sliping and equipping the remaining 500 m.
He mentioned: “To find out the precise diploma of misalignment, Cementation Africa will full a 3D scan of the entire shaft.”
Whereas one other contractor raisebored this explicit shaft, Cementation Africa efficiently accomplished the sinking and equipping of Mopani’s Synclinorium and Mufulira Henderson shafts over a decade in the past. The sinking and equipping of the 1,280 m Synclinorium shaft – at 7 m diameter – was carried out between 2011 and 2014 and was then geared up for commissioning and handover in 2016. The sinking and equipping of the 1,580 m Mufulira Henderson shaft – at 6 m diameter – was commissioned in June 2020.
“Our present work at Mindola consists of the removing of the sinking headgear and winders, and the set up of a brand new everlasting headgear, after which we are able to rope-up and fee the brand new winders,” Adendorff explains. “This may permit us to scan the shaft from prime to backside with specialised gear, together with the size of shaft already geared up above a depth of roughly 1,000 m.”
This may permit the verifying of the correctness of the present metal members that can information the conveyances down the shaft, and addressing of any points recognized. The underside 500 m of the shaft barrel will then be sliped and lined to make sure a real vertical line by which the conveyances can journey safely.
“We are going to the proceed with the equipping of the shaft and development of the loading field steelwork on the shaft backside,” Adendorff says.
The corporate’s legacy in a few of Africa’s deepest and most difficult shaft-sinking tasks has been key to its success and status in Zambia, in keeping with Hercilus Harmse, Engineering Companies Govt at Cementation Africa. He factors to southern African tasks such because the 1,200 m shaft at Palabora Mining Firm – safely reaching its ultimate depth in 2024 – and the two,750 m air flow shaft at South Deep.
“A lot of our tasks are carried out in environments the place there are poor floor circumstances or the place in depth de-stressing of rock is required,” Harmse says. “We convey this expertise into our designs and execution guaranteeing that we are able to apply revolutionary options – utilizing our fleet of specialized gear for rigging, winding and shaft sinking.”
Security stays a cornerstone of Cementation Africa’s status in Zambia and globally, highlights New Enterprise Director, Graham Chamberlain. During the last 12 years of shaft sinking and mine growth, the corporate has achieved over 8 million fatality-free shafts.
“That is the results of consciously constructing a security tradition on each website and prioritising security in all our planning and design work, utilizing business expertise to be taught from each incident,” Chamberlain says. “Significantly with gear that’s essential to protected operations, we develop and apply duplicate techniques so there may be all the time a backup. With winders, as an example, we be certain that an digital system shall be duplicated by a mechanical system in case of failure.”
Adendorff notes that, whereas technical functionality and expertise have made Cementation Africa the popular contractor in its area in Zambia, the corporate has additionally made an vital group contribution by its lengthy presence within the nation. This consists of the constructing of a faculty for the deaf in 2016 – which right now caters to over 100 kids – and an orphanage feeding scheme.
“Our historical past in Zambia has additionally made us an employer of selection, as everybody is aware of our worth system and the respect with which we deal with our workers,” he concludes.
