Structures designed to protect the areas around a slope from falling rocks include mesh or cable
nets, barriers and
fences, and catchment areas (ditches at the toe of a slope, designed to prevent rock fall from
reaching the highway).
Drapes made from double twisted high-tensile steel wire net (mostly in hexagonal mesh shape)
represent an
economical and safe solution, which is often used for protection of rock falls.
The wire
mesh is designed to be strong
enough to withstand the force of the falling rocks. It allows the rock/debris to move freely
inside the mesh when it's
properly installed. The double twist on the mesh also ensures that the net won't fail if one
wire is cut. Anchoring the
mesh to the surface can be accomplished by different procedures and depends on the soil
characteristics. This solution
can also help to establish vegetation also.