Gainike inorganic self-foaming filling material is used by mixing material A (powder), material B (liquid) and water in a certain proportion. It is a completely inorganic material with absolute flame retardancy and antistatic properties, neither burning nor supporting combustion. It adopts innovative foaming technology to realize normal-temperature chemical self-foaming and normal-temperature curing of inorganic materials. Compared with organic polymer materials, this material has the advantages of low price, no heat release and good safety, meeting the requirements of light weight, sealing, high efficiency and environmental protection. It is especially suitable for filling and plugging broken areas in contact with coal such as upper and lower corners, goafs, roof caving areas, as well as hollow areas and air leakage channels.

When the coal-oxygen inhibitor is mixed with water and sprayed onto the surface of coal, it forms a polymer protective film on the coal surface. This protective film has multiple effects: it can not only block the contact between coal and oxygen, inhibit coal spontaneous combustion, and extend the coal storage period, but also effectively suppress the flying of coal dust, avoiding environmental pollution and weight loss caused by wind, rain and erosion.

Technology is developed for the prevention and control of coal spontaneous combustion in areas such as goafs of steeply inclined working faces, goafs of upward/downward mining working faces, and fractured zones of roadway surrounding rocks, as well as for the sealing of air leakage channels like working face corners, support roofs, and shallow goafs behind supports.

JTF‑Ⅳ is designed to prevent coal spontaneous combustion in goafs and abandoned roadways. Composed of Materials A and B, it forms an inorganic high-water gel with low viscosity. The gel penetrates well, seals leaks, and cools fire zones effectively.

JTF‑Ⅱ targets coal spontaneous combustion in roadways, support tops and air leakage at upper and lower corners. Materials A and B mixed at a 1:1 ratio form cured foam with over 10‑fold expansion without heat generation, avoiding the high heat release of traditional polyurethane fillers. With low initial viscosity, it penetrates well into broken coal and goafs, forming a dense structure with excellent sealing, heat absorption and cooling performance.

JTF-I uses microcapsule technology to overcome drawbacks of traditional mine fire control methods. Its gelling material is activated after foaming to achieve first foaming then gelling. This technology integrates the strengths of grouting, inert gas, gel, inhibitors and foam systems while avoiding their weaknesses.