Steel-plastic composite mesh false roof (steel-plastic mesh) for underground coal mines Mine support mesh Mine false roof mesh The overall structure of the square mesh formed by the stretching method has the following properties:
. It is not easy to generate static electricity due to friction. In the underground coal mine environment, the average surface resistance of the plastic mesh is below ⒐.
, good flame retardant properties. It only melts but does not burn in an open flame environment. Even if it burns no longer than the longest distance from the fire, it will be extinguished.
Strong anti-corrosion ability and anti-aging.
, easy for construction and transportation. Plastic mesh is relatively soft and is not suitable for scratching workers during construction. It also has the advantages of being easy to curl and bundle, cut and light in specific gravity, making it easy to transport, carry and construct underground.
, convenient for washing coal. The density of this kind of plastic mesh is between . and less than the density of water. During the coal washing process, the broken mesh belt floats in the water and is easy to be washed away
. It has strong bearing capacity in both vertical and horizontal directions. After The molecular structure of the plastic mesh after the pressure and stretching process is equivalent to a rearrangement, and the tensile strength of the material is twice that before it is not stretched. The tendons and ribs formed by bidirectional stretching are perpendicular to each other. This structure makes the application The pressure on the mesh surface can be effectively transferred to the surrounding ribs through the nodes, thereby greatly improving the overall pressure-bearing capacity of the mesh surface and making it less likely to cause the ribs to break. And because this plastic mesh is bidirectionally stretched rather than woven, the mesh The hole creep is small and the mesh size is uniform, which can effectively prevent the falling of broken coal blocks, protect the safety of underground workers and the safety and smooth operation of mine cars
Product use: This product is mainly used in coal mines The false roof and protective roof during layered mining of thick coal seams underground can also be used as support materials for various roadways such as anchor tunnels, support tunnels, and bolt-blasted tunnels. When used for false roofs, they must be used in combination with two or more layers. In addition, it can also be used as anchoring and reinforcing material in other mine tunnel projects, slope protection projects, underground civil engineering projects and traffic road projects. It is the best substitute for plastic woven mesh and steel wire mesh.
Product model and logo of steel-plastic mesh:
The model of steel-plastic mesh is composed of five parts: product type, material, longitudinal and transverse tensile strength grade, flame retardant and antistatic, and vertical and horizontal edges of the mesh. The specific signs are as follows: + (represents false roof + means the material is steel wire + polypropylene means the breaking force of a single mesh belt, the unit is kilonewtons means the composite mesh means flame retardant and antistatic)
Technical performance and parameters:
Specifications and models
()3 (Series)
() (Series)
Single mesh belt breaking force
Tensile elongation at break
< br/> Node peel strength
Flame retardant properties
Flame burning time 3, flameless Burning time
Antistatic properties
＜
Technological innovation: modified plastic-coated steel wire is woven into a mesh, and the mesh points are firmly bonded
Reasonable design: the mesh belt has small elongation and uniform force, effectively avoiding the occurrence of mesh pockets
High strength: the strength reaches or exceeds the rhombus metal mesh
Low cost: the production cost of the product is lower than that of rhombus with the same strength The production cost of metal mesh is low
Light weight: only /3 of the weight of metal rhombus mesh, reducing labor intensity
Safety: flame retardant and antistatic, effectively preventing the corrosion of rhombus metal mesh.
Steel-plastic composite mesh for underground coal mines