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Mining inflatable air packs have impressive compression resistance. Once fully inflated, they appear solid and robust. Even when external surrounding rocks exert pressure, they remain firm and undaunted. Reinforced with thickened tension straps, they do not become loose or "fluffy." It all depends on the synergy between the coated fabric material and internal pressure—staying firm when needed, without any "soft collapse," providing reliable support for underground mining operations.

Mining inflatable air packs are primarily used in coal mines to block the diffusion of gas, dust, and harmful gases in areas such as the upper and lower corners of mining faces, as well as the intake and exhaust airways of fully mechanized mining goafs. This enhances safety during underground operations.

Coated fabric air pack materials:

1. Main materials: The inner layer often uses PVC for excellent air tightness; the outer layer is typically equipped with wear-resistant canvas protective covers and nets, effectively resisting punctures from sharp objects and enhancing the durability of the air packs in complex underground environments. Additionally, some designs feature flame-retardant, anti-static, and explosion-proof fabric as the outer structure, with a buffer layer in the middle and a rubber inner bladder. This three-layer structure works synergistically to effectively resist external compression and impact, meeting safety requirements such as fire prevention, anti-static, and explosion-proofing underground.

2.Material performance parameters: For instance, air packs using high-modulus para-aramid as the base fabric exhibit anti-static, flame-retardant, compression-resistant, tear-resistant, and impact-resistant characteristics. These performance parameters are derived from extensive testing, ensuring safety and reliability in practical use, thereby safeguarding underground personnel and equipment.

3.Working pressure: Inflating the air pack to 10.7 kPa is a common working pressure setting. At this pressure, the air pack can stably support the roof space.

In summary, the inflation method for mining inflatable air packs should be flexibly chosen based on the scale of operations, environmental conditions, and safety requirements. By matching parameters such as size, pressure, and material to the actual conditions of the mine, the air packs can fully realize their role in underground support operations. Thank you for your support!