Composite gel (high water-retention hydrogel) (MAG-Ⅰ) is a grouting-enhanced fire prevention and extinguishing material. When used in combination with yellow mud slurry and fly ash slurry, it can significantly increase the slurry concentration, reduce the risk of pipeline blockages and bursts, improve grouting efficiency and quality, largely avoid the phenomenon of channeling during single grouting, enhance the filling effect, prolong the retention time of water in the goaf, and at the same time reduce the unit grouting cost.

Eakt Slurry Colloidal Foam (FJP-Ⅱ) was developed to address the problems of large-area coal spontaneous combustion in underground coal mine gobs and the difficulty in controlling hidden and unknown fire sources. Compared with the shortcomings of traditional yellow mud grouting, such as easy loss along gullies and inability to spread to high positions, Eakt Slurry Colloidal Foam enables yellow mud slurry to self-foam and generate inert gas by adding two components. The formed mud colloid can spread, accumulate and cover in the gob with foam as the carrier, which can bring more water and yellow mud slurry into the high, medium and low positions of the prevention and control space. It also has good accumulation performance, greatly improving the fire prevention and extinguishing effect.

To overcome the shortcomings of traditional yellow mud grouting or fly ash grouting, such as easy loss along gullies and inability to spread to higher positions, Yikete Mud Inhibiting Foam uses specialized equipment to convert yellow mud or fly ash into mud foam. The resulting mud inhibiting foam can spread, accumulate, and cover in the goaf with the foam as a carrier, bringing more water and yellow mud into the high, medium, and low positions of the treatment space. This technology integrates four prevention and control methods—mud, nitrogen, water, and inhibitor—utilizing the covering property of yellow mud, the suffocating property of nitrogen, the cooling property of water, and the inhibiting property of the inhibitor for joint treatment, greatly improving the effectiveness of fire prevention and extinguishing.