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Active” systems are those that act to prevent excessive movement of a rock detachment once it has occurred. Active systems include:
- Superficial reinforcing systems (Steelgrid BO and High Energy Absorption panels form an armoured mesh which is fixed to the rock slope through anchors)
A superficial reinforcing system is aimed at the stabilization of the rock mass surface layer containing potentially unstable rocks of a size typically 1-1.5m³.
The complete system consisting of anchors, steel cable panels, steel cables and mesh netting, is a basic “unit” or cell enclosed between 4 anchor points.
To determine the most suitable system, the stiffness or rigidity of the facing and the forces transmitted to the anchors must be assessed.
With these reinforcing systems, it is crucial that the facing provides a high resistance with minimal deflection in order to limit the displacement of the rock mass. High Energy Absorption panels with a strength in excess of 200kN are available.
A superficial reinforcing system is particularly suited to areas where the accumulation of debris at the toe of a drapery system is not possible due to space constraints e.g. a road with a minimal shoulder width.
Design Suggestions
Geofabrics have a comprehensive rockfall protection product portfolio to ensure that our clients are offered the most appropriate and economical solution. Our design suggestions are carried out using the MACRO 1 and MACRO 2 software and typical anchorage, connection and product performance information can be provided if required.
Our long standing partnerships with leading Consulting Engineers and experienced installers in this highly specialised field, means that a “complete package” can be provided. Please contact us to discuss your specific project details.
MACRO 1 Superficial Reinforcing Software MACRO 2 Drapery Design Software
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