Rock engineers from several mines approached us wanting a yielding support system, which when grouted into the hole could also hold the weight of the mesh on primary insertion into the rock. They also needed the mesh to maintain its position as close to the rock face as possible. Several products were tested, none of them fulfilling all the criteria.
Advantages
High ability to dissipate kinetic energy
High rates of energy dissipation
Very stiff in static conditions
Debonding coating inhibits corrosion
No special training needed for existing crews
Yields at constant load
Exceptional displacement range
Least vulnerable to shear failure
Easy to install