Split Set Type Friction Bolts | Onix Underground Mining

26 May.,2025

 

Split Set Type Friction Bolts | Onix Underground Mining

Split Sets are an efficient ground support element commonly used in underground installations that work primarily through friction, providing immediate reinforcement. They consist of a longitudinally grooved steel tube, with one end tapered to facilitate easy insertion into a borehole.

For more information, please visit TRM.

The Split Set is installed by driving it into a borehole with a diameter slightly smaller than the outer diameter of the bolt. This forced insertion generates contact forces between the external surface of the bolt and the inner walls of the borehole.

As the bolt is inserted into the undersized hole, radial forces are created along the entire length of the bolt. These forces generate continuous frictional resistance between the bolt and the walls of the borehole, which provides an immediate and effective anchoring mechanism. This frictional resistance is what gives the Split Set its strength and ability to stabilize the surrounding ground.

Due to their simple design and efficient installation process, Split Sets are widely used in mining operations, tunneling projects, and other underground construction projects. They are valued for providing a quick, cost-effective, and reliable solution for ground reinforcement, ensuring the stability of excavations, tunnels, and other underground structures.

Split Sets are an efficient ground support element commonly used in underground installations that work primarily through friction, providing immediate reinforcement. They consist of a longitudinally grooved steel tube, with one end tapered to facilitate easy insertion into a borehole.

The Split Set is installed by driving it into a borehole with a diameter slightly smaller than the outer diameter of the bolt. This forced insertion generates contact forces between the external surface of the bolt and the inner walls of the borehole.

If you are looking for more details, kindly visit Split Sets Underground Mining.

As the bolt is inserted into the undersized hole, radial forces are created along the entire length of the bolt. These forces generate continuous frictional resistance between the bolt and the walls of the borehole, which provides an immediate and effective anchoring mechanism. This frictional resistance is what gives the Split Set its strength and ability to stabilize the surrounding ground.

Due to their simple design and efficient installation process, Split Sets are widely used in mining operations, tunneling projects, and other underground construction projects. They are valued for providing a quick, cost-effective, and reliable solution for ground reinforcement, ensuring the stability of excavations, tunnels, and other underground structures.

Mining and Ground Support - Rock Bolts

Mining and Ground Support

Split Set® friction rock stabilizers are used for underground or surface support in many applications:

Underground Mine Roof Support & Mine Roof Bolting

Every kind of underground mine uses Split Set® friction rock bolts for mining and ground support. Miners use them for mine roof bolting and mine roof support as well as to pin mesh, hang conveyors, hold pipes, and cables, secure rails in place, and for other needs.

Ground Support for Tunnels and Other Excavations




Split Set® stabilizers have solved many problems for contractors in construction and in maintaining railway and road tunnels, hydropower tunnels, powerhouse and storage caverns, shafts, water and sewage tunnels, and others.



Ground Support for Surface Jobs Split Sets are being used more often for above ground applications or anywhere reliable ground stabilization is needed. Open-pit mine and quarry operators use them to stabilize high walls for the most effective mine and ground support. Open-pit miners find that using Split Set® stabilizers with mesh can permit a steeper mining angle, reducing overburden removal.

Contractors find Split Set® friction rock stabilizers ideal for attaching screen to control spalling cuts. Construction contractors use them with mesh to tie back the ground and contain rock falls on steep highway cuts, as well as in building excavations.

Contact us to discuss your requirements of Mesh Bolt. Our experienced sales team can help you identify the options that best suit your needs.

Varied Applications for Split Set® Rock Bolt Systems where Stabilize, Hold and Control are Necessary
  • Mine roof and ribs
  • Pillars
  • Water tunnels
  • Shaft walls
  • Sewage tunnels
  • Underground storage caverns
  • Road tunnels
  • Pipe and ventilation ducts
  • Conveyor belts
  • Trolley wires
  • Surface excavation slopes
  • Highway cuts
Contact us for examples of applications where the Split Set® friction rock stabilizers utilized in mining and ground support have also solved problems for contractors working on tunnels, sewers, reservoirs, quarries and other rock and mine support areas.

Download specifications in pdf format for:
Model SS-33 is 1.3 inches (33 mm) in diameter.
Model SS-39 is 1.5 inches (39 mm) in diameter.
Model SS-46 is 1.8 inches (46 mm) in diameter.

(Requires 'Adobe Acrobat Reader' version 4.0 or higher to view.)