Optimization and Application on High Pressure Spraying Dust Removal at Fully Mechanized Working Face

According to the status of high dust concentration and management difficulties at fully mechanized working face, we propose technology of high pressure spraying. The models and the pressure of high-pressure atomizing nozzle is identified through the theoretical calculation and experimental verification based on the flour dust distribution law test at 2501 working face of Xinqiao Coal Mine. The dust removal efficiency of the driver position at the working face is 91.6%, and the dust removal efficiency is achieved.