This product is a purely inorganic grouting material with a short setting time. It rapidly develops strength after final setting and enables underwater operation for quick water stopping and leak sealing. The material features low viscosity and strong permeability, allowing it to quickly penetrate fine cracks and water-bearing channels. Upon contact with water, it rapidly sets, forming a dense water-tight consolidated mass with high impermeability, strong adhesion, and slight expansion. It does not shrink or peel off, ensuring long-term sealing. The material is easy to apply and has strong bonding strength with the substrate. It is widely applicable for water sealing and control projects in coal mines and underground environments under complex conditions such as large water inflows, fissure water seepage, and fault fracture zones, as well as for leak sealing, water control, emergency repair reinforcement, and grouting applications in underground engineering, underwater structures, and tunnels.