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This system is designed to control much larger blocks of rock by not allowing the rocks to begin moving under the system. However if a major slide occurs under the system it has the capabilities of controlling these events through the overall strength of the system and the flexibility of allowing movement under the cable nets.
These installations have been engineered and field tested to also assure that they function as required. |
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HI-TECH ROCKFALL CONSTRUCTION, INC. |
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Cable net drapery: This consists of individual wire rope nets backed with double twisted hexagonal wire mesh laid on a rock slope. The system is anchored at the top with anchors and attached to a wire rope support grid. The anchors and the wire rope supporting the system are generally of a larger size and strength as required for the wire mesh drapery. 
Rockfall Barriers: This consists of I-beam posts spaced at certain intervals with a wire rope support system running from post to post with special friction devices placed in the support ropes. Then wire rope nets are attached to the support system and backed with a wire mesh. All of the anchors used in this system must meet a required pull-out strength as determined by the rockfall energies the system will be absorbing. This type of system is generally used where there is sufficient catchment from the toe of the slope to the area being protected. There are several types of installations that can be utilized depending on rock size, velocities and bounce heights to control and stop the rockfalls. These systems have been extensively engineered and field tested to assure they function as required.
Debris Flow Systems: This system is very similar to the rock impact fences with minor modifications to control mud slides and debris flows. Through field testing it was determined that these barriers were capable of controlling slow moving debris flows which may not have the initial impact of a rolling rock but continue to add stress to the system as the mud and debris build-up.