Rockfall protection can be dealt with in two ways:
- by curtain meshing the rock faces
- by catch walling
curtain meshing the face, spalling rocks can be either held in place by pinning the mesh to the rock strata or by draping it over the face guiding the falling rocks harmlessly to the base of the escarpment.
The mesh facing normally has vertical and/or horizontal cabling to provide fixity and integrity to the jointing of the panels. It is normal to seek advice from specialist installation companies as to the design of this type of work. Additional anchoring of large unstable rock masses on the face may be required.
Catch walling rockfall protection is a freestanding gabion wall of sufficient mass to withstand impact of falling rocks. Location and height of the wall are important to ensure the trajectory of the falling rocks.
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