underground mining and Construction
Underground Mine Construction
Trans Africa Container construction of enterprises, such as coal and ore mines, for the subsurface extraction of minerals. The construction of underground mines encompasses the digging of vertical, inclined, and horizontal underground mining excavations and the erection of buildings and structures on the surface. The surface structures and buildings include headframes, hoisting-machine buildings, buildings used for both administrative and general service purposes, machine repair shops, cooling towers, compressor houses, stores, and spur tracks. In underground mine construction, more than 60 percent of the total amount of construction and installation work is performed underground.
Mine Construction, Development and Contract Mining
As a rule, underground mines are constructed under complex mining and geological conditions at depths that reach 1,000 or more m. Such depths are characterized by high temperatures of the enclosing rock, elevated rock pressure, and gas emission. A substantial amount of excavation work is carried out to renovate existing underground mines and to prepare new levels in such mines.
The sinking of shafts is fully mechanized. BUKS-lm drilling rigs are used to drill blastholes. Loading machines are employed to load the bulk rock, and heavy-duty self-unloading buckets with a capacity of up to 5 m3 are used to deliver the rock to the surface. Shafts are usually reinforced with cast-in-place concrete by pouring the concrete mix, through pipes, behind a movable metal formwork.
To put a modern underground mine into operation, 40 to 80 km of mining excavations are made. Every year, construction workers dig more than 360 km of mining excavations, including 25 km of vertical shafts. In 1976, the average shaft-sinking rate with the use of rock-loading complexes was 55 m/month in the coal industry and 43.6 m/month in the ore mining industry. The USSR is first in the world with respect to both the volume and the rate of sinking vertical shafts; a total of 401.3 m of finished shafts are sunk per month. Drilling rigs, rock-loading machines, and entry-driving machines are used to drive horizontal excavations. In 1975, about 15 percent of all excavations at underground mines constructed by the coal industry were made with cutting-loading machines; about 20 percent of all such excavations—that is, 1.5 times more than the planned standard—were made by highspeed techniques. In 1976, the average monthly excavation rate was 59.7 m of crosscuts and drifts in coal mines and 69.6 m in ore mines. The volume of ground removed per month in making excavations of large cross section—for example, pit bottoms and chambers—ranges from 300 to 460 m3.
EXPERIENCED KNOW-HOW
Mine Construction, Development and Contract Mining
Trans Africa Container Mining has a long history as a safe and efficient contract miner and offers you a full-range of underground mine construction and installation services.
We’ve archived mining contractors around the world on some incredible investments. Top mining companies rely on the service system in their global underground operations. We help mining operations reduce installed costs and optimize mix designs in mining projects.
Coal mines sometimes have to deal with very poor top and floor conditions in parts of the mine. These challenges can be solved by stabilizing the gob that accumulates on top to the long wall machine, as well as preventing the sloughing off of the top directly above the coal face ahead of the shields by injections with De Neef® polyurethane and oregano-mineral grouts to fill the voids and re-bond the strata.
Across our mines in the Congo and East Africa, contractors have benefited from our contracts on huge mining projects.
Adopted from our largest copper mines, Trans Africa Container Mining has quickly become a leader in both mining and civil construction projects in D.R.C. Among the key benefits: significant gains in productivity and cost advantages.
We have extensive experience in underground construction, including some of the largest and deepest underground mine projects in Australia, Chile and Canada. Wherever projects take you, our team of world-class field technical specialists can work with you on site to ensure you get an efficient mix that suits your project needs.
Trans Africa Container’s underground mines are located in D.R.C., East and Southern Africa They include one of the world’s largest underground copper mines, with shafts that reach 1,800 metres underground.
Our regional team of shotcrete experts and support staff worked closely with the mine’s ground support operations personnel. Together, the teams developed an optimised mix design with the full Trans Africa Container admixture system.
By adopting Trans Africa Container, the mine’s ground support team made major savings, with material costs coming in 10 percent lower than other options, and rebound levels down to single digits while enhancing quality and safety for the site. They also were able to accelerate drilling cycles by one to two hours. The solution? A high performing, optimized mix design that allowed for the faster early strength value needed to re-enter the excavation face and proceed with bolting operations.
COVERING ALL THE BASES
COVERING ALL THE BASES Full Service of Underground Mining Capabilities
Trans Africa Mining offers a full spectrum of underground mine services from mine development to design and construction services, and contract mining expertise. Our teams are skilled in managing complex projects of all sizes, in many different regions and geological conditions. Each project is supported by a seasoned and multi-disciplinary team of talented engineers, technical experts, project managers, experienced mining staff and a leadership team with one goal in mind – your success.
FULL SERVICE EXPERIENCE
Mine Construction
Our underground mine construction abilities and services experience runs the gamut from refuge stations, underground shops, material handling systems and explosives magazines to conveyor and crusher systems. We are also skilled at ground stabilization, mechanical and electrical installation, installing dewatering systems, and upgrading and re-commissioning mines. DMC’s proven experience and long history of underground construction and installation projects ensures we bring the most complete and knowledgeable team to our client’s mining projects.
SAFE AND EFFICIENT UNDERGROUND DEVELOPMENT
Mine Development
Our underground mine construction abilities and services experience runs the gamut from refuge stations, underground shops, material handling systems and explosives magazines to conveyor and crusher systems. We are also skilled at ground stabilization, mechanical and electrical installation, installing dewatering systems, and upgrading and re-commissioning mines. DMC’s proven experience and long history of underground construction and installation projects ensures we bring the most complete and knowledgeable team to our client’s mining projects.
EXPERIENCE AND EXPERTISE
Contract Mining
Trans Africa Mining has the experience, people, equipment and expertise to deliver full production mining services, from specialty projects to complete mining operation. Once the feasibility and design of your underground mine has been established, DMC is able to develop and operate the mine with its equipment, trained personnel and management systems. Where it assumes responsibility for mine operation, Trans Africa Mining hires staff, develops production budgets and schedules, produces reports, maintains regulatory permits and filings, manages operating staff and assumes overall responsibility for safety and loss control.
THE STORY SO FAR
Mine Construction Statistics
Our mine construction expertise runs deep and covers a lot of ground. Statistics are just the tip of the iceberg.
We’ve archived mining contractors around the world on some incredible investments. Top mining companies rely on the service system in their global underground operations. We help mining operations reduce installed costs and optimize mix designs in mining projects.
Projects
Locations
Clients
Cameco, Cargill, IMC, Newmont
Plus Many More
Mine Development
Contract Mining
Estimated Value
Current Time Stastistics
Why Choose Trans Africa Container For Your Mine Development and Contract Mining Needs?
“We start from zero and develop to the final stage of the mine. I believe that the whole team understands that we are working for the bigger picture. Not just one project, but for the overall success of the (client) company.”
Offering a full spectrum of underground mining services combined with industry-leading safety, efficiency, and expertise; DMC is your end-to-end mining provider. We hire staff, develop production budgets and schedules, produce reports, maintain regulatory permits and filings, manage operating staff and assume overall responsibility for safety and loss control. Whether you seek development or operation, we can build a successful solution that suits your project.
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Partner with us today to define how tomorrow looks. We are the ‘go-to’ service provider for tomorrow’s mines with a commitment to providing cost effective mining solutions to your business.
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Work with passionate experts who care about people as much as our client success. Our teams love what they do and together we are shaping a new future for mining that is driven by people, technology, innovation and sustainability.
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