Gainike Inorganic High-Efficiency Filling Material for Closed Wall (JCT-Ⅰ) is a specially developed inorganic filling material for efficient filling and blocking of permanent closed walls. The material consists of two powder components, Material A and Material B. According to on-site requirements, it is mixed with water in a certain proportion to make a premix, which is then fully mixed by a slurry mixing device to form an inorganic solid material. After the mixed slurry is poured into the cavity of the permanent closed wall, on the one hand, it has a good function of penetrating and blocking broken holes and cracks in the surrounding rock; on the other hand, it can achieve a complete roof-contacting effect.