SNS Active Protection Network (including the GPS1 active protective net, GPS2 active protective net, GAR1 active network GAR2 Slope Protection Network), commonly used in slope collapse, collapse the reinforced protection of the class of geological disasters, the SNS Active Protection network (active network, take the initiative protective net, slope protection network) all kinds of steel wire rope net-based flexible network covers wrapped in the required protection on the slopes or rock, the principle is the use of a bolt fixed systems, respectively, through the support rope and suture tension (steel wire rope net flexible characteristics) to the flexible network part of the pre-tension, and thus constitute the entire slope protection and strengthening the role of anchor plus Zhang net envelope, the SNS initiative protective net (active network, active protection network, slope protection network) the system will be the local concentrated load evenly around the pass to give full play to the entire system of protection, ie, partial loading, the overall effect, so that the system can withstand large loads and reduce single-bolt anchorage force. In addition, due to the openness of the system, groundwater can be freely excretion, to avoid slope instability due to increased groundwater pressure; SNS active protection network in addition to a stable slope effects, while inhibition of the slope subjected to further weathering and erosion, and no special requirements, not to destroy and change the slope of the existing topography and vegetation growth conditions on the slope morphological characteristics, artificial slope greening its open characteristics to subsequent or future conditions and the need to retain the necessary conditions, green plants in the open space free growth, the solid soil of plant roots and became one of slope protection system, thus inhibiting the slope failure and soil erosion, which in turn protect the landform and slope vegetation to achieve slope protection and environmental protection purposes. Commonly used models: the the GPS1 initiative protective net, GPS2 active protective net, GAR1 active protective net GAR2 active protective net.