1. In the comparison of the existing main dust prevention schemes in coal mines, from the aspects of use cost and dust reduction efficiency, feng shui combined spray and high-pressure water spray are the best choices in the current dust reduction schemes in coal mines. The application places of wind-water linkage spray are mostly roadways and transfer points, while the application scope of high-pressure water spray to suppress dust is wide, including all underground working faces.
2. The key areas of coal mine dust control are fully mechanized working face and fully mechanized excavation working face, accounting for more than 80% of the total coal mine dust. Here, high-pressure water spray is the best solution to suppress dust. To achieve a good dust suppression effect, we need the theoretical and scientific guidance of high-pressure water spraying to suppress dust, as well as an accurate grasp of the dust generation mechanism in the production process of coal industry. Only in this way can we meet the requirements of AQ 102 1-2006 national safety production industry standard.