The main characteristics of SNS active protection system composition is divided into the steel wire net, wire grid and high strength steel wire mesh three class. The first two by rope bolt support ropefixed mode, the latter through reinforced (can be prestressed) and rope bolt (a method of edgesupporting rope) anchor plate and necessary bordered along the fixed mode of the supporting rope, flexible net cover will be constructed as system feature cover on the potential geological hazards on slope so as to achieve the purpose of protection. Active network according to different the protection function, the protection ability, composition and structure characteristics of the four types of the form.

Flexible feature enables the system to the local concentrated load to the surrounding uniform transfer to give full play to the whole system protection ability, namely the local load, the overall effect, so that the system can bear larger load and reduce the anchoring force of single bolt requirements. In addition, because of the openness of the system, ground water free excretion,avoid due to rising groundwater pressure caused by slope instability problems; the system in addition to a certain contribution to the stability of the slope, also can inhibit the slope from being further weathering and denudation, and no special requirement on the slope surface shape, do not damage and change the original slope topography and vegetation growth conditions, the open feature for subsequent or future conditional and needed to carry out artificial greening slope retaining the necessary conditions, green plants can grow in the open space, plant root soil reinforcement and slope protection system became one, resulting in the suppression of the slope destruction and soil erosion, in turn protects the land forms and vegetation on slope, slope protection and environmental protection of truth to the best.

The characteristics of active protection system

1 make full use of flexible material easy extensibility and high anti impact ability, through the system development and many field experiments formed adapt to the systematic technology of geological disaster slope protection, through a balanced design and components of stereotyping in factory production system to achieve the standardization and optimization, accurate measurement and convenient control the engineering quality and Engineering quantity.

Light and building blocks 2 make full use of light quality characteristics of high strength metallic materials to realize the system installation, with the most short time limit and the minimum labor to realize construction installation and maintenance is simple and fast, and maximize meet a variety of complex terrain, interference avoidance or as far as possible to reduce the caused by excavation of the environmental damage and for other operations and surrounding buildings in normal operation,can be synchronized or ahead of earthwork excavation engineering subject construction, to realize the reverse construction or parallel operation;

3 make full use of the openness of the system to reduce the visual system interference and protection of the original vegetation and growth condition, and give the implementation of artificial afforestation may be provided, make full use of slope reinforcement effect of plant roots and green plant environment greening and beautifying function, the engineering treatment and environmental protection and renovation com;

4 uses the steel wire rope material, special anti-corrosion treatment to ensure the anticorrosion lifelong, usually ranging from 30 to 50 years.