Abstract:

Coal seam water infusion can effectively reduce dust exposure during coal mining, so it is important to improve the water absorption capacity of coal for raising dust removal efficiency. Water injection simulator was designed and made in this study and the experiment was carried out on different coal samples, different water pressures and different surfactants to get the direction of coal water absorption and pressure parameters. It is proved that the formulation of surfactant can effectively improve the wetting properties of coal.

Key words: Coal Seam Water, Water Injection with Pressure, Formula of Surfactant, Surface Tension, Contact Angle