DRILLING-BOLTING RIGS

Application of drilling and bolting trucks in underground mines

The machines are used in the extraction of metal ores and other mineral resources in facilities free from methane hazards. They perform two related but separate tasks divided between the machines: preparing the production face for blasting operations (drilling trucks) and securing the exposed roof with rock bolting (bolting trucks).

Efficient working components and high power output enable drilling in rock strata that are difficult to process. Their stable design and rock drilling systems support operations in both sedimentary layers and harder rock faces.

Design and working system

The trucks feature a single operator’s station and a single boom. Depending on their intended use, they are equipped with drilling frames for blastholes or bolting turrets for installing expansion and resin bolts.

In drilling trucks, the working system includes a telescopic boom and a drilling frame, which facilitates precise drill starting. For bolting operations, a bolting turret tailored to the type of components being installed is used, equipped with a rotary or percussive rock drill at the end.

KGHM ZANAM drilling and bolting trucks: model comparison

The four models differ primarily in their intended use, dimensions, and the range of drilled hole diameters.

* The SWW2.0B enables the drilling of longer holes by manually adding drill rods.

KOT1.75: a bolting truck for low-profile workings

The KOT1.75 is the lowest machine in its category, standing 1,750 mm high and 2,300 mm wide. It drills holes up to 7,000 mm in length and 25 to 38 mm in diameter, while its 115 kW engine complies with the Stage V standard. The model is intended for workings with a restricted cross-section.

SWK2.0: bolting truck

The SWK2.0 is adapted for installing rock bolting using bolts 1.6 to 2.2 m long. It drills holes 28 to 38 mm in diameter, weighs 19,300 kg, and uses a 100 kW Stage V engine. A three-speed gearbox allows it to reach up to 18 km/h during transits between production faces.

SWW2.0A and SWW2.0B: drilling trucks

The SWW2.0A is equipped with an RRW-type drilling frame featuring a Montabert HC106 percussive rock drill, and in newer versions, a Montabert HC95 rock drill.

The SWW2.0B is equipped with an RT-1B telescopic frame and a Montabert HC25 rock drill. The design enables the drilling of long holes by manually adding drill rods.

The chassis parameters in both versions are similar: a height of 2,000 mm, a width of 2,600 mm, a 100 kW Stage V compliant engine, and a hole diameter range of 28 to 64 mm.

Safety and mobility in the working

The operator cabs are designed to withstand impacts with an energy of up to 60 kJ, which protects the workstation during rockfalls. The appropriate stability of the machine reduces perceptible vibrations and additional loads generated during the drilling process.

Despite an overall length reaching 14 m, the trucks maintain their manoeuvrability, making them suitable for room-and-pillar, longwall, and roadway mining systems. The selected tyres ensure traction even on a bumpy floor and slightly inclined terrain.

Rock bolting installation

Bolting trucks allow for drilling a bolt hole and installing the bolting component directly at the production face. KGHM ZANAM offers machines configured for two types of bolts (expansion and resin bolts) and featuring a working system designed to install components ranging from 1.6 to 2.6 m in length, and up to 7 m in the case of the KOT1.75.

How to select a drilling or bolting truck?

Model selection is based on four criteria:

• the height and width of the working: for low cross-sections, the KOT1.75 is recommended;

• the scope of work: drilling blastholes (SWW trucks) or bolting (SWK and KOT trucks);

• the required diameter and length of the holes resulting from the blasting technology;

• the length of the bolts used and the type of rock bolting.

Frequently asked questions about drilling and bolting trucks

What operations are drilling and bolting trucks used for?

Drilling trucks are used for drilling blastholes. Bolting trucks are used for drilling bolt holes and installing bolts to secure the exposed roof.

Does KGHM ZANAM offer a machine that combines both functions?

No. The portfolio includes separate drilling trucks (SWW) and bolting trucks (SWK and KOT), selected according to the scope of work carried out at the production face.

Can KGHM ZANAM trucks operate in gassy mines?

No. The machines are designed for facilities extracting metal ores and other mineral resources where there are no methane hazards.

Which model will perform well in a low-profile working?

The KOT1.75, with a height of 1,750 mm and a width of 2,300 mm. The other models are 2,000 mm high and 2,600 mm wide.

What length of bolts can be installed?

The working system supports bolting components from 1.6 to 2.6 m in length, and up to 7 m in the KOT1.75 machine, depending on the model and equipment configuration.

Select the right drilling or bolting truck for your working conditions

Do you need a machine tailored to the parameters of your working and the scope of drilling and bolting operations? Contact KGHM ZANAM to get information about available models, their configurations, and delivery lead times.