Friction Bolt For Mine Rodway Support
- -Friction Bolt For Mine Rodway Support, made from a strip of high-tensile steel, is roll-formed into a C-shape featuring a longitudinal slot for engagement. Designed with one end tapered to simplify insertion into a drill hole, the opposite end is securely welded to a ring that anchors the bearing plate.
- -Usually combined with domed plates, provides anchoring force for rock strata.
- -Friction Bolt For Mine Rodway Support undergoes very stringent tensile testing to ensure product quality.
Friction Bolt For Mine Rodway Support Functions
Friction Bolt For Mine Rodway Support with only 2 parts, a tube and matching domed bearing plate. The high strength steel tube is slotted along its length. One end is tapered for easy insertion into a drill hole and the other has a welded ring flange to hold the bearing plate. With the bearing plate in place, the tube is driven into a slightly smaller hole, using the same standard percussion drill that made the hole. As the tube of the rock bolt slides into place, the full length of the slot narrows, causing radial pressure to be exerted against the rock over its full contact length.
Friction Bolt For Mine Rodway Support Features&Advantages
1. Material adopt high-strength alloy strip steel;
2. the installation is the simplest;
3. Don’t need resin cartridges;
4. The friction force between the friction bolt and the rock mass is large;
5. Bear high shear resistance and tensile strength;
6. Equipped with high-strength plate, evenly force;
7. The height of the tunnel is higher than the length of the bolt
Friction Bolt For Mine Rodway Support Mechanical Properties
| Technical Data | TRFB33 | TRFB39 | TRFB42 | TRFB47 | |
| Drill hole diameter (mm) | 30-32 | 35-38 | 38-40 | 43-45.5 | |
| Min. Yield strength (kN) | 80 | 90 | 100 | 120 | 135 |
| Min. Tensile strength (kN) | 100 | 120 | 132 | 165 | 180 |
| Typ.Tensile strength (kN) | 120 | 130 | 150 | 180 | 200 |
| Elongation (A%) | ≥20 | ≥20 | ≥20 | ≥20 | |
| Typ.Anchorage (ton/m) | 4-6 | 4-7 | 5-8 | 6-10 | |
| Bearing plate (mm) | 150x150x4 | 150x150x4 | 150x150x4.5 | 150x150x5 | |
Friction Bolt For Mine Rodway Support Accessories
Bearing plate, Driver, Pull collar.
Friction Bolt For Mine Rodway Support Length & Package
Length:450-3000mm as specified
Package:100pcs — 300pcs each bundle as specified
Friction Bolt For Mine Rodway Support Applications
Mines
Tunnels
Slopes
Places that need ground support
How to work
Firstly, conduct an assessment of the ground conditions.
Select the appropriate bit and bore a hole by the diameter and length of the bolt, as well as the specified drilling method.
Ensure the hole's length exceeds the friction bolt's length by at least 150mm.
Affix a plate onto the Friction Bolt For Mine Rodway Support, positioning the dome against the ring and the tapered end towards the front.
Install the Friction Bolt For Mine Rodway Support so they are perpendicular to the rock's surface.
Insert the driver dolly into the bolt and drive the Friction Bolt For Mine Rodway Support into the hole until the plate is securely against the rock surface.
Avoid striking theFriction Bolt For Mine Rodway Support once the plate is snugly attached to the rock surface to prevent damage to the end of the bolt.
After installation, conduct pull tests to verify the initial anchorage effectiveness of the Friction Bolt For Mine Rodway Support .
