3D vegetation net Overview 3D vegetation net slope protection technology Geonet Slope Vegetation advantages, which can effectively solve the rock slope, the problem of high and steep slope protection. Application examples show that three-dimensional vegetation net slope protection is extremely beneficial to the stability of the slope, the protective effect is very good. The technology of three-dimensional vegetation net slope protection dimensional vegetation net in recent years to not only significantly improve the overall and local stability of the slope, but also conducive to the growth of the slope vegetation, lower project cost, in line with the development direction of the slope engineering Soil and Water Conservation in China has great value. The basic principles of the three-dimensional vegetation net slope protection. 3D vegetation net slope protection concept of three-dimensional vegetation net slope protection refers to the combined use of active plant and geosynthetic materials engineering materials, to build a protection system with its own ability to grow in the slope, through the growth of plants slope reinforcement of a new technology. Slope topography, soil quality and regional climate characteristics, slope surface covering layer of geosynthetic materials and press a certain combination of spacing planting a variety of plants. Root reinforced by the activities of plant growth, stems and leaves of the purpose of the anti-erosion, after the processing of ecological slope protection technology, in the slope to form a dense vegetation cover to form intertwined roots in the topsoil, the effective suppression of stormwater runoff on the slope erosion, increasing the shear strength of the soil, reducing the pore water pressure and soil from gravity, thus greatly improving the slope stability and anti-erosion ability. 2. 3D vegetation net slope protection mechanism vegetation erosion is achieved through three main components: First, the plant growth layer (including the the perianth, sheaths, leaves, stems), dense coverage through their own to prevent slope topsoil directly from rain erosion, reduce stormwater runoff, erosion energy and surface runoff speed, so as to reduce the loss of soil; humus layer interface (including in leaf litter and roots), as the slope topsoil a protective layer; roots layer, this part of the the slope surface soil reinforced anchor, provides mechanical stability role. Under normal circumstances, in the early stage of plant growth, individual plants formed roots only loosely intertwined, not long lying roots easy separation with soil, no protection. Three-dimensional network is to achieve a more thorough enhance the effects of the above three shallow protection. First, within a certain range of the thickness and increase its protective properties and mechanical stability; second is due to the presence of a three-dimensional network, extensive root system and the three-dimensional network of the plant net rib connected together to form a plate structure (corresponding to the slope surface soil reinforcement) of the protective layer, thus increasing the tensile strength and shear strength, restrict the erosion case caused gradual destruction "(erosion interested individual plant directly damage over time, the damaged area plus large) extension of the phenomenon, and ultimately limit the the slope shallow surface sliding and uplift the occurrence. 3D vegetation net slope protection vegetation of the role of three-dimensional mesh slope protection technology integrated geonets slope of the advantages and plants, has played the role of composite revetment. The slope vegetation coverage rate of 30% or more, can withstand rain erosion, more than 80% coverage can withstand heavy rain erosion. Subject to the lush plant growth, resistant to erosion runoff velocity of 6m / s, more than 2 times the general turf. The Geonet exist have a good effect on reducing the the slope soil's moisture evaporation, increase infiltration. Geonet material black polyethylene endothermic insulation can promote seed germination, is conducive to plant growth. 4 Fast protective measures (1) into conflict when the duration and vegetation establishment period, the project just completed into the storm season, the need to take "reinforced turf works fast protection order can be obtained after the completion of the comprehensive coverage of the anti-erosion vegetation . Reinforced turf "three-dimensional vegetation net in the open space on the lawn plantations or near the site of the pre-cultivated turf, rolled into the floor to the entire volume or block, and then laid to required slope protection. ⑵ in difficult governance arid regions, you can use the soil coagulant, a good choice of suitable grass seed coagulant mixing with soil spray (after special treatment before sowing grass seed, and then the application of soil coagulant). Slope, grass seed and soil treatment by the soil coagulant will not be lost due to wind and rain coagulant reduce the evaporation of the moisture in the soil, grass seeds to ensure the water supply to a certain extent, greatly improving the survival rate of the grass seed. The role of three-dimensional three-dimensional vegetation net slope protection vegetation net slope protection technology integrated geonets and plants revetment advantages play a composite revetment role. The slope vegetation coverage rate of 30% or more, can withstand rain erosion, more than 80% coverage can withstand heavy rain erosion. Subject to the lush plant growth, resistant to erosion runoff velocity of 6m / s, more than 2 times the general turf. The Geonet exist have a good effect on reducing the the slope soil's moisture evaporation, increase infiltration. Geonet material black polyethylene endothermic insulation can promote seed germination, is conducive to plant growth. Construction process. Slope processing will slope on and miscellaneous stone debris clean backfill compaction formation of the lower-lying areas, to ensure a smooth slope. Laying three-dimensional network ⑴ laying along the slope of the three-dimensional vegetation net Shop from top to bottom in the slope between the network and the slope to maintain smooth combination. Shop at the top of the hill when the the ⑵ embedded three-dimensional network need to extend 40 ~ 80cm, buried and compacted soil. And ⑶ anchor the three-dimensional network bottom-up with U-reinforced ф6mm more three-dimensional network fixed, U-shaped steel bar is about 15 ~ 30cm, width of 8mm, U-bar spacing of about 1.5 ~~ 2.5m middle with 8 # U nails or the bamboo nail auxiliary fixed. ⑷ to overburden dimensional vegetation net laid, dirt uniform coverage in the three-dimensional vegetation online, mesh coated cover until the empty package to ensure that the the 3D vegetation online soil thickness not less than 12 mm. Then fertilizer, auxin, cement, according to a certain proportion of mixed, applied sprinkling on the surface. Fertilizer nitrogen: phosphorus: potassium = 15:15:15 or nitrogen: phosphorus: potassium = 10:8:7 fertilizer and N-containing organic matter, fertilizer about 30 ~ 50g / ㎡. 3. Seeding overburden backfill is completed, Hydraulic Spraying upcoming grass seeds (per the square 25 grams Seeding) and to promote its growth and adhesion agents, wood fiber, fertilizer, auxin, moisturizing and water by mixing stirring to form a uniform mixture evenly sprayed on the slope on Hydraulic Spraying machine.