【摘要】 根据流体力学中空气射流理论 ,从理论和实验上研究了空气幕隔离综采工作面司机处呼吸性粉尘的原理及其方法 .空气幕在采煤机司机工作区与煤壁间形成了一道“无形透明的屏障” ,阻隔采煤机截煤过程中粉尘向司机处扩散 ,应用于现场效果明显 ,平均隔离呼吸性粉尘效率达82 3 4% .更多还原

【Abstract】 Based on the theory of air jet in the hydraulic mechanics, the principles and methods of respiration dust isolation with air curtain at drivers position in the fully mechanized coal face are studied theoretically and experimentally. The air curtain formed a “immateriality and transparent obstacle" between the drivers working area and the coal wall to prevent the dust from moving towards the machine driver. The effect of the technology applied in the working site is good, and the average efficiency of isolating breathing dust is 82 3%.更多还原