Gabion cages and materials Introduction traditional river slope or retaining wall has a mortar or dry stone, cast coagulation, precast concrete block slope and retaining walls. The entire river bank revetment traditional face closed up, cut off from the exchange of material between the soil and water, affecting the ecological balance, accelerate the deterioration of the living environment of the residents. With the development and progress of society, the traditional technology can not meet the revetment "security, resources, environment, landscape," the coordinated development and "enable the project to the Resources Water water conservancy, water conservancy and environmental hydraulics ecological transformation" of water conservancy project design. Gabion cage is honeycomb-shaped grid mesh (After special wire coating, by special machinery woven twisted, honeycomb-shaped mesh) assembled into cages, tailored to the requirements of engineering design, manufacture, assemble and mount block cages After connecting stone filler into one structure, the new structure is used as the dike, levee foundation and embankment protection and other projects. Form of the structure can be divided into retaining wall, slope, bottom protection, foot protection, riprap underwater cages. Traditionally turn slope, the bottom protection works commonly called a cage gabion cages thin mat (height is generally 20 ~ 30cm). Retaining walls, riprap cage commonly called gabion cages thick box (typically more than 50cm in height). Governance hillside, green vegetation and soil and water conservation are commonly called gabion hanging vegetation. Gabion cage specifications: (1) Cage Model: Long 1 ~ 4m, width of 1 ~ 2m high 0.4 ~ 1m, between grid mesh of 1 to 3; (2) mat Model: long 3 ~ 6m, 2m wide high 0.2 ~ 0.3m, between grid sheet 2 to 5. Mesh material: general use galvanized (zinc, aluminum or aluminum) wire, magnesium aluminum + zinc + hot wire, polyester film + galvanized (zinc or aluminum) wire or baked polyester + HDG (zinc or aluminum) wire, mesh wire diameter 2.0 ~ 4.0mm. Gabion cage material: (1) Wire: Wire (including fasteners wire) to a low-carbon steel wire, grades shall conform to the national standard "carbon steel" (GB / T700- 2006); the mechanical properties of steel shall conform to the national standard "low general purpose Carbon Steel Wire (GB343- 1994) "on the wire in 5.2 requirements. (2) steel wire mesh: Aperture is generally 60 × 80 ~ 120 × 150 (mm × mm); tensile strength of not less than 37 ~ 44kN / m. (3) Finish: zinc coating weight of not less than 250 ~ 400g / m 2; 10% aluminum + zinc coating weight of not less than 300 ~ 500g / m 2; baked polyester + galvanized layer weight of not less than 120 to 155 ( g / m); bake 10% polyester + aluminum + zinc coating weight of not less than 200 ~ 300 (g / m); 10% of the aluminum layer weight of not less than 85 ~ 110g / m.