Geogrid is a main geosynthetics, which has unique performance and efficacy compared with other geosynthetics. Geogrids are divided into plastic geogrids, steel-plastic geogrids, glass fiber geogrids and glass fiber polyester geogrids.
classify
plastic
The square or rectangular polymer net formed by biaxial stretching of plastic geogrids can be divided into uniaxial stretching and biaxial stretching according to the different stretching directions during manufacturing. It is made by punching holes in the extruded polymer sheet (mostly made of polypropylene or high-density polyethylene) and then directionally stretching it under heating conditions. The unidirectional stretching grid is made by stretching only along the length direction of the plate; Bidirectional stretching grid is made by continuously stretching the grid in one direction and then stretching the grid in the direction perpendicular to its length.
In the process of manufacturing plastic geogrids, polymers will be rearranged and oriented with the process of heating and stretching, which will enhance the binding force between molecular chains and achieve the purpose of improving their strength. Its elongation is only 10%~ 15% of the original board. If anti-aging materials such as carbon black are added to the geogrid, it will have better durability such as acid resistance, alkali resistance, corrosion resistance and aging resistance.
mine
Mine grille Mine grille is a kind of plastic fence used underground in coal mine. With polypropylene as the main raw material, after being treated by flame retardant and antistatic technology, the overall structure of "double-resistant" plastic net was formed by biaxial stretching. This product has the advantages of convenient construction, low cost, safety and beauty.
Mine geogrid is also called false roof of coal mine biaxially stretched plastic net, or false roof net for short. Mine geogrid is specially designed and manufactured for false roof support and roadway side support in underground coal mining face. It is made of a variety of high molecular polymers and other modifiers through heating, extrusion, molding, stamping, stretching, setting and winding.
Compared with metal textile mesh and plastic woven mesh, mine geogrid has the characteristics of light weight, high strength, isotropy, anti-static, non-corrosion, flame retardant, etc. It is a new grille material for underground support engineering and civil engineering in coal mines.
Mine geogrid is mainly used for false roof support engineering in underground mining face of coal mine. Mine geogrids can also be used as materials for anchoring and strengthening rock and soil in other mine roadway engineering, slope protection engineering, underground civil engineering and traffic road engineering. Mine geogrid is one of the best substitutes for plastic woven net.
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