Double-sided stretch plastic support mesh for underground coal mines

Mining double-sided stretched plastic guard rail net

Product Description:

Coal mine underground plastic retaining mesh is a "dual-resistant" plastic mesh. The product is easy to install, cost-effective, and safe with an aesthetic appearance. Its main features include low tendency to generate static electricity through friction, excellent flame-retardant properties, strong corrosion resistance, ease of handling during construction and transportation, and strong load-bearing capacity in both longitudinal and transverse directions.

Product Features:

The product is a square mesh structure formed by extruding polypropylene as the main raw material, treated with flame-retardant and antistatic technologies, and then stretched in both directions.

1. Resistant to static charge generation. In the underground coal mine environment, the surface resistivity of the plastic mesh has an average value below 1×10^9 Ω.

2. Excellent flame-retardant performance. Melts without burning in open flame environments and extinguishes within 10 seconds or less after being separated from the fire.

3. Easy for coal washing. This plastic mesh has a density of about 0.92, less than that of water. During the coal washing process, the broken mesh pieces float on the surface and are easily washed away.

4. Excellent corrosion resistance and aging resistance.

5. Easy for construction and transportation. The plastic mesh is relatively soft, which is less likely to injure workers during construction. It also offers the advantages of being easy to roll, tie, cut, and has a light weight, making it convenient for underground transportation, handling, and construction.

6. The plastic mesh exhibits strong load-bearing capacity in both longitudinal and transverse directions. After undergoing extrusion and stretching processes, the molecular structure of the material is re-oriented, resulting in a tensile strength 2-3 times greater than that of the non-stretched material. The筋and肋 formed by bidirectional stretching are perpendicular to each other, allowing pressure applied to the mesh surface to be effectively transmitted to the surrounding筋and肋 through nodes, significantly enhancing the overall load-bearing capacity of the mesh. When an external force is applied to a single筋or肋, the force is evenly dispersed to other筋or肋, reducing the concentrated bearing capacity of a single element and thus preventing the fracture of the筋or肋. Additionally, due to the bidirectional stretching of the plastic mesh rather than weaving, the mesh hole creepage is minimal, and the hole sizes are uniform, effectively preventing the fall of coal fragments and ensuring the safety of workers underground and the safe operation of mining vehicles.

Product Application:

This product is primarily used as a support for coal mine under-ground mining, and can also serve as support material for various tunnels such as bolted tunnels, supported tunnels, and锚shot tunnels.

Mine plastic meshes, utilizing polypropylene plastic (PP), employ technologies such as plastic orientation stretching, flame retardancy, and anti-static properties, successfully developing flame-retardant and anti-static plastic belts for use in coal mine shafts. These have passed quality inspections, and the mine plastic meshes fully comply with the specified requirements and have obtained a production permit. Coal mine false ceiling meshes, coal mine false ceiling strips are produced and inspected strictly in accordance with the national standard GB/T-2408-1996. The HXKWS-type mine false ceiling protective mesh, woven from flame-retardant nets, is mainly used as the back net for supports, replacing the current wooden boards, bamboo rakes, and metal meshes used in anchor supports. You can also choose the plastic grid mesh ceiling produced by our company.

PerformanceThe HXKWS-type mining false ceiling protective mesh boasts excellent overall performance. When subjected to external pressure, regardless of which part of the mesh is affected, the force is immediately transmitted to the surrounding wires, creating a technical advantage of shared load-bearing, a reasonable structure, and strong load-bearing capacity.

Compared to bamboo rakes and metal meshes, this product has a smaller volume and lighter weight. A roll of 8 square meters of plastic mesh weighs only about 4 kg; whereas, a roll of the same area of metal mesh weighs a staggering 25.5 kg. It is easier to lay and requires less labor. The holes in the plastic mesh are smaller, providing a larger effective coverage area, better safety, and better control over the ceiling, which is also beneficial for coal quality management. The plastic mesh is resistant to acids and alkalis, and its properties remain largely unchanged after a year of underground burial and pressure. In contrast, the metal mesh, due to severe corrosion, significantly reduces its strength and efficiency.

By laying plastic protective nets, the stability of the channel rock is enhanced, preventing occurrences of channel wall caving and coal spillage. This improves the safety conditions in the tunnels and reduces the likelihood of accidents. It also decreases ventilation resistance in the tunnels and saves energy. The plastic nets are lightweight, resistant to acids and alkalis, cost-effective, and easy to install.