阐述了煤层注水机理,它是注水压力、毛细管力和分子扩散的综合作用结果;研究了在2145综采工作面进行钻孔布置,其钻孔注水参数设计应考虑煤的渗透性、水压、流量和时间等因素;通过防尘效果检验、注水防尘系统及其监测监控,表明该研究提高了注水防尘效果.图3,表1,参11. The mechanism of water injection in coal seam is expounded. It is the result of water injection pressure, capillary force and molecular diffusion. It is studied that in 2145 fully mechanized coal mining face, the borehole layout should be done. The design of borehole water injection parameters should consider the permeability of coal, Flow and time and other factors; through the dust effect test, water and dust control system and its monitoring and monitoring, indicating that the study improved water injection dust effect .Figure 3, Table 1, Senate 11.