The passive protection fence is composed of four main parts: steel wire rope net or ring net, a fixed system, decompression ring and steel column. The steel column and the wire rope net are connected and combined to form a whole, which forms a comprehensive protection for the protected area, so as to prevent the fall of the collapsed rock and soil and play a role in slope protection. It has been designed not only for ease of installation, but also for the fastest and easiest installation in harsh terrain conditions such as cliffs, i.e. with minimal chaining and minimal opening control. In order to adapt to the factory development trend of the construction industry, all system components are standardized factory production, and the on-site construction is mainly a building block assembly operation, and the construction, installation and maintenance personnel only need a small number of conventional simple tools for system installation, maintenance and component replacement.
