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3D mesh
A three-dimensional porous material is formed by heating and melting thermoplastic synthetic resin, extruding fiber filaments through a nozzle, stacking them together, and melting them together. It combines the advantages of geotextile and plant slope protection, and plays a role in composite slope protection. When the vegetation coverage rate of the slope reaches more than 30%, it can withstand the scouring of light rain, and when the coverage rate reaches more than 80%, it can withstand the scouring of rainstorm. When the plants grow vigorously, the runoff velocity that can resist erosion reaches 6m/s, which is more than twice that of ordinary grass. The existence of three-dimensional networks has a good effect on reducing water evaporation in slope soil and increasing infiltration. At the same time, due to the black PP/PA material of the geonet, it has the function of heat absorption and insulation, which can promote seed germination and facilitate plant growth.