SNS Rockfall Protection Barrier System is a general term used for a group of mitigation measures designed to stop or control rockfall as they occurs. They are typically built using steel posts and a flexible-net supported by wire rope. The systems are anchored to the ground using rock or soil anchors. Their evolution over the past 50 years has seen them transform from rudimentary systems fabricated on-site and with minimal engineering basis to commercial products that are highly engineered and subject to strict testing guidelines and certification.
Where barrier capacities were once considered large at only 100 or 500 kJ, systems are now commonly installed up to 5000 kJ, some even higher. The benefits of low material cost, ease of installation and high adaptability to difficult topography have made them a valuable tool for engineers to help mitigate rockfall hazard and protect life and property. Thousands of kilometers of roads throughout the world are now protected by such structures as are other vital infrastructure such as hydro electric and mine sites, pipelines, public facilities and private residences
