A better product at a better price.
Skema's new Friction Rock Stabilisers are attracting world attention. Their design allows them to tighten as lateral rock displacement occurs, enhancing their yielding capabilities.
How It Works
Skema's Friction Rock Stabilisers are made up of two main parts:
- A hollow shaft with a large split down its length. One end is tapered, the other has a welded ring lug to hold the plate in place.
- A square plate used to stabilise the shaft and hold it in place, as well as retaining mesh.
The tapered end allows the tube to be compressed into a smaller hole made in the rock.
The tube exerts radial forces which grows stronger as rock displacement occurs, generating an active support resistance.
The System Components
This is all you need:
- The tube and matching domed bearing plate, an inexpensive driver tool to fit the rockdrill you use to make the hole.
- Various male and female drivers are available to fit all rockdrills, stopers and drifters for all Friction Rock Stabiliser models.
- A pull tester will help you verify the effectiveness of the stabilisers after installation, and over time. Pull collars are available for each tube diameter.
Choice of Tubes and Plates
Friction Rock Stabilisers come in 33mm, 39mm and 46mm diameter tubes and are available in lengths to suit your needs. These can be supplied in black or hot dip galvanised steel to satisfy environmental corrosive conditions.
Conforms to Ground Shifts, Grips Even Tighter.
Pull tests prove the superior holding power of the Friction Rock Stabiliser system. After installation (when ground shifts can loosen an ordinary rock bolt), the Friction Rock Stabiliser tube grips more tightly. Days or weeks later, when the average conventional bolt becomes ineffective and needs retorquing, a typical stabiliser tube retains its load-bearing characteristics.
In the hole, the tube exerts forces against the rock over its full contact length as well as providing plate support.
It never needs tightening. The tubular structure and high strength of the Friction Rock Stabiliser allows it to conform to rock displacements.
Full Length Support.
The Friction Rock tube applies frictional properties over its full contact length; not just at the end as an ordinary point-anchor bolt does. The tube and bearing plate exert forces against the rock immediately upon installation.