High Strength Energy Absorbing Bolt
Functions:
It is an effective rock reinforcement system for underground roof support. If there is rock mass deformation, the paddle part will be worked as anchor points to bear the load and smooth section will absorb energy to prevent rock fall.
Features&Advantages:
1.After fully grouted in the bore hole, the paddle part will work as anchor points. If there is rock mass deformation, the paddlesection will bear the load and thesmooth section can move axially or radially without constraints and absorb energy to prevent rockfall.
2.Kiruna wedge can be used for immediate support function. So that the wire mesh can be installed together with bolt.
3.This High Strength Energy Absorbing Bolt is particularly suit for mines with large deformations in the rock mass, e.g. seismically
active mines, rock burst or squeeze rock area.
4.Product has been tested by CANMET,CANADA
Mechanical properties:
Product name | 20mm High Strength Energy Absorbing Bolt |
Smooth section diameter | 20mm |
| Yield strength | ＞500MPa/160kN |
Tensile strength | ＞630MPa/200kN |
Displacement capacity（for 2.1m E-Bolt） | ＞200mm |
| Energy absorbing | ＞40kJ |
Elongation after fracture | ＞20% |
Suggested bore hole diameter | 28-30mm |
Bearing plate:
Domed nut, hex nut, anti-friction washer,domed ball
Kiruna wedge can be used for immediate support.
Length & Package:
1.Bolts are packaged in bundles.
2.Bolt fittings, such as nuts, anti-friction washers and domed balls, are supplied fitted to rock bolts in the configuration requested.
Applications
Mines
Tunnels
Slopes
Places where need ground support
