RAISE BORE MINING
Vertical Raising
A Safer, Faster and More Cost-Effective Way of Excavating Raises
Raise Boring is a powerful and precise way to excavate raises with smooth walls that don’t require finishing, making it the preferred method for creating ventilation shafts. Raise boring techniques are also used to excavate various raises and shafts for your civil construction projects.
The standard in raise boring
Raise boring machines from Trans Africa Container have been setting the industry standard for more than fifty years. We continue to lead thanks to outstanding equipment design and excellent quality. Our boring drills include only premium components, and all Robbins machines come with a 12-month (2 000-hour) warranty. At Trans Africa Container, we strive to construct high-quality machines that are easy to set up, operate and maintain.
Trans Africa Container’s range of raise boring machines includes models for both conventional raise and box hole boring as well as down reaming and it covers diameters from 0,5 meters up to over 6 meters. The boring drills are used in both civil engineering and mining applications for drilling shafts for ventilation, drainage, ore passes, back fills, hoisting, slot holes, and pen-stocks for hydro power plants. Features include drill pipe handling for easy and safe pipe handling as well as the computerized Rig Control System, RCS, which improves drilling accuracy, equipment reliability, and serviceability of the raise boring machines.
At Trans Africa Container Mining we own and operate a fleet of 4 Raise Bore machines, 2,500 meters of drill pipe and 16 reamers with sizes ranging from 28 in to 12 ft diameter, offering you the optimal equipment for your raise boring needs.
Safety underground
To reduce fatigue and maximize uptime, operators can control the boring drill rig remotely from a safe and comfortable setting above ground.
Multi-purpose drilling
Our boring rigs lower costs by excelling in a variety of settings with quick and easy setup, giving you more flexibility with one rig.
Fast and easy setup
Setup of the raise boring machines from Epiroc is quick and easy to maximize your uptime.
What is Raise Boring
Raise boring is the process of boring a raise. A pilot hole is drilled from the drill rig to an underground cubby or tunnel. A reamer head with cutters is then attached to the drill string. The drilling rig at the surface or upper level then pulls tension onto the drill string while rotating, causing the large diameter cutting bit to cut a large hole from the underground tunnel or level to the surface or upper level.
The cuttings are removed as this fall to the ground due to gravity feed. The process sounds simple but requires skilled operators, good quality down hole equipment and powerful drill rigs.
A Wide Array of Solutions
AN ARRAY OF EXPERIENCE
Why Choose Trans Africa Container for Your Raise Boring Needs?
“We’re looking for new ways to solve problems and use some of these tried-and-true techniques in innovative ways.”
A capable, cutting-edge fleet matched with knowledgeable people have enabled us to safely and efficiently complete each Raise Bore project we encounter. We can tackle your project with the same tenacity we’ve demonstrated for over 30 years.
TOP EXPERIENCE AND EQUIPMENT
Challenging conditions demand powerful tools
6 000 meters of ventilation shafts are being drilled into very hard rock in the Katanga Mine in the D.R.C. .The conditions have been even harder than expected, but with Epiroc’s Robbins 123RH rig, Orefields Raise Boring AB has been able to meet the rigorous demands of their client.
What is Raise Bore Drilling used for?
Raise boring is used to create a circular vertical or horizontal excavation between two existing levels or tunnels in an underground mine. It is mostly used for ventilation shafts from the surface to underground.
Mining
Raise boring is used to drill shafts for ventilation, transferring ore from one level to another, creating silos for storing rock as well as hoisting of rock and ore to the surface. The application of Raise boring in mining also assists in providing access for personnel or material underground.
Energy
These types of holes and shafts are used in Hydro Electric or Pump Storage plants as pressure shafts. Also, it is used for access to underground nuclear storage facilities.
Civil
In urban infrastructure, raise boring is used to collect waste or flood water from streets directing it to an underground tunnel or dispose of. It is also used to access ventilation shafts required in underground metro and rail systems.
What are the benefits of Raise boring?
Compared to conventional methods of excavation, raise boring has the following advantages:
- Safe
- No explosives used
- No rock fractures associated with blasting
- Stable circular excavation results with zero damage to the sidewalls of the hole or shaft
- Accurate hole or excavation
- Automated operation
- Cost-effective
- Fast, efficient and flexible
- Excavation at various angles or dips
- Ability to obtain machine data and advance rates client
Partners with Experience
Raise Boring Statistics
The past decade has seen us satisfy a number of clients and hone our expertise on tough projects. Our statistics speak for themselves.
What are the different diameter sizes that raise bore
machines can excavate?
The diameter size of excavations are dependent on the client’s requirements, type of rock formation or geology and the capability of raise bore machine used.
250mm – 8m
Excavation diameter
180mm – 1,5km
Excavation depth
FAQ
The Raise Boring process
and applications
