The active protection net is to connect the wire rope net to the mountain that needs protection. It relies on the toughness of the wire rope net and is suitable for any slope surface, which can effectively prevent rocks from falling on the mountain. The passive protective net is mainly used to intercept rocks on the hillside. The net relies on steel columns and is erected at the foot of the mountain to intercept rocks falling from the mountain in the safe area, so it is called a passive protective net.

The active protection net is a flexible wire rope net that covers and wraps the slope or rock required for protection.
The passive protection net is an upright fence that does not cover the slope that needs to be protected. The steel column and the steel wire rope net are connected as a whole to form a surface protection for the protection area, thereby preventing the collapse of rocks and soil from falling and playing a protective role.
The passive protection device consists of steel wire rope netting, ring netting (additional grid for blocking small falling rocks if necessary), fixing system (bolts, anchor cables, foundation and support ropes), decompression rings and steel columns, and the steel columns It is connected and integrated with the wire rope net to form a surface protection for the protected area, thereby preventing rock and soil from falling and playing the role of slope protection.