不同参数对综放工作面尘流运动规律的影响

基于耦合的离散相模型，应用CFD软件对综放工作面内的尘流规律进行数值模拟，对比研究不同倾角、不同配风量、不同粒径粉尘参数对综放工作面粉尘浓度分布规律的影响，并与现场实测的粉尘浓度分布情况进行对比分析.结果表明，大倾角综放工作面内风流更趋于流向靠近煤壁的空间.倾角增加，呼吸性粉尘运动活跃.适当增大风量后，呼吸性粉尘易被风流携带，粉尘浓度降低明显，但风速过大易产生二次扬尘.

Effect of Different Factors on Dust Flow Regularities in Fully Mechanized Caving Face

Based on the theory of coupling discrete phase model， air flow regularities and dust distribution were investigated by using CFD， contrastive research on dust concentration was carried out under different factors， such as different coal seam dip angle， different ventilation quantity and different dust diameter， and comparative analysis between simulating dust concentration and field measurement results was conducted. The results showed that air trends to flow near coal wall in high inclination angle fully mechanized caving face. The respirable dust is active with adding coal seam dip angle. After appropriate increase air volume， respiratory dust is easy to be carried by air， and the dust concentration reduces obviously， but too large air speed may produce secondary dust.