Rockfall protection netting, also referred to as passive rock catch nets, are flexible slope protection components. They are assembled by combining steel wire mesh, support ropes, steel posts, anchor bolts and energy dissipation rings in a specific layout. All accessories are interconnected to form a continuous flexible protective barrier, and the unique flexible structural arrangement endows Rockfall protection netting with excellent energy absorption capacity.
Essentially, Rockfall protection netting bear the impact load generated by rocks rolling down slopes, and transfer the impact force dispersedly to anchor bolts and mountain foundations through the mesh and support ropes. All components work together to form a stable flexible protection system, enabling the nets to buffer high-energy impacts without structural damage. In mountain slope protection projects, falling rock blocks collide with the mesh surface. The steel wire mesh serves as the primary load-bearing part, while energy dissipation rings act as buffer components. They jointly share impact loads to secure areas beneath slopes.
In terms of manufacturing processes, the main steel wire ropes are produced via twisting and weaving techniques, and metal connectors are forged and formed. Mesh panels are spliced and assembled with clips or rope clamps, and the entire system is erected on-site through anchor bolt anchoring and steel post installation. Mesh panels are overlapped and fixed to form an intact, continuous protective surface, with reliable flexible connections established between all components.
As for materials, mainstream options include carbon steel wire ropes and stainless steel fittings. Carbon steel components feature outstanding cost performance and are generally treated with hot-dip galvanization. A dense zinc layer forms on the component surface to isolate air and moisture and prevent rust, making them suitable for most outdoor mountain environments. Most stainless steel fittings adopt Grade 304 stainless steel, which delivers superior corrosion resistance thanks to alloy elements. They are widely applied to slope projects exposed to severe corrosive conditions such as rainy, humid regions and coastal salt-fog zones.