Numerical simulation of dust distribution at a fully mechanized face under the isolation effect of an air curtain

在是的一个煤矿的一张充分使机械化的工作的脸建原型，我们调查了由在它由空气的一个窗帘的隔离的过程期间的模拟，流动地和灰尘分发，使用 CFD 软件，流畅。结果证明有效地在 shearer 罐头上安装的空气窗帘阻止灰尘(特别能呼吸的灰尘) 扩散进操作员的工作区域，减少操作员并且极大地的方面上的灰尘集中改进他的工作环境。空气窗帘的地应用程序证明一个空气窗帘的灰尘隔离效果是相当显著的。为呼吸灰尘的隔离效率是超过 70% ，也，它为非呼吸的灰尘有好灰尘隔离效果。空气窗帘是在一张充分使机械化的工作的脸解决灰尘隔离的问题的一个有用方法。它用更广泛的应用程序在其它地方有一个实际背景。

At a fully mechanized working face of a coal mine as prototype,we investigated,by simulation,the flow field and dust distribution during the process of its isolation by a curtain of air,using the CFD software, Fluent.The results show that the air curtain installed on the shearer can effectively prevent the dust （especially the respirable dust）from diffusing into the work area of the operator,reducing the dust concentration on the side of the operator and greatly improving his working environment.The field application of the air curtain shows that the dust-isolation effect of an air curtain is quite noticeable.The isolation efficiency for respiratory dust is over 70%and,as well,it has good dust-isolation effect for nonrespiratory dust.The air curtain is a useful way to resolve the problem of dust-isolation at a fully mechanized working face.It has a practical background elsewhere with more extensive applications.