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coal mine underground double-resistance net

coal mine underground double-resistance net

  • Categories:NEWS
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  • Time of issue:2020-03-23
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(Summary description)Coal mine underground double-resistance net is a kind of square grid with integral structure, which is made of polypropylene or polyethylene, steel wire as the raw material, treated by flame retardant

coal mine underground double-resistance net

(Summary description)Coal mine underground double-resistance net is a kind of square grid with integral structure, which is made of polypropylene or polyethylene, steel wire as the raw material, treated by flame retardant

  • Categories:NEWS
  • Author:
  • Origin:
  • Time of issue:2020-03-23
  • Views:0
Information
Coal mine underground double-resistance net is a kind of square grid with integral structure,which is made of polypropylene or polyethylene, steel wire as the raw material, treated by flame retardant and anti-static technology, and formed by extrusion, cooling, welding and other processes. Friction is not easy to produce static electricity, good fire resistance,strong anti-corrosion and anti embroidery ability, convenient for construction and transportation, and strong bearing capacity.
The performance of coal mine underground double-resistance net is as follows:
1. Friction is not easy to produce static electricity. In the environment of coal mine, the average surface resistance of plastic net is less than 1 × 10 Ω.
2. Good flame retardancy. In the open fire environment, it can only melt and not burn, even if the burning time is less than 10s from the fire. 
3.corrosion resistance is strong, anti-aging.
4. Convenient for construction and transportation. The plastic layer is relatively soft, so it is not suitable to scratch workers in the construction, and it is easy to curl, bind, cut and light in proportion, so it is convenient for underground transportation, carrying and construction.
5. double-resistance net is Easy to wash coal. The density of this kind of plastic net is between 0.89-0.91, which is less than that of water. In the process of coal washing, the broken net belt floats in the water and is easy to be washed away.
6. double-resistance net has strong bearing capacity in both the vertical and horizontal directions. The molecular structure of the plastic net treated by pressing and stretching process is equivalent to reorientation, and the tensile strength of the material is 2-3 times of that before stretching. The ribs and ribs formed by biaxial stretching are perpendicular to each other, which makes the pressure exerted on the net surface can be effectively transmitted to the four ribs through the nodes, Therefore, the overall bearing capacity of the mesh surface is greatly improved, so it is not easy to cause the fracture of reinforcement. Moreover, because the plastic mesh is biaxially stretched rather than woven,the mesh creep variable is small, and the mesh size is uniform, which can effectively prevent the falling of coal fragments, protect the safety of underground workers and the safety and smooth operation of the tramcar.
Application of underground double resistance net in coal mine: 
Coal mine undergrounddouble resistance net is mainly used as the false roof and support wall when the thick coal seam is mined in layers under the coal mine, and also as the support material for many kinds of roadways, such as bolt roadways, support roadways, bolt shotcreting roadways, etc, In addition, it can also be used as anchoring and strengthening materials for other mine roadway engineering, slope protection engineering, underground civil engineering and traffic road engineering. It is an alternative product of plastic woven mesh and steel wire mesh.
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