综采工作面旋转风幕隔尘实验研究

发布时间：2018-06-01 15:28

本文选题：综采工作面 + 旋转风幕　；参考：《环境工程学报》2015年08期

【摘要】：为了研究综采工作面旋转风幕隔尘机理及其隔尘效率,对旋转风幕隔尘下的综采工作面粉尘浓度分布及其隔尘效率开展了模型实验研究。研究结果表明,(1)在相同工况下,旋转风幕对全尘和呼吸性粉尘的隔尘效率高于普通空气幕,且对呼吸性粉尘的隔尘优势更为明显;(2)出口风速对隔尘效果的影响较大,存在一个最佳的出口风速,在该风速下旋转风幕对全尘和呼吸性粉尘均保持较高的隔尘效率;(3)当出口风速低于最佳风速时,旋转风幕对全尘和呼吸性粉尘的隔尘效率均随着风速的增加而显著提高;当出口风速高于最佳风速时,随着出口风速的增加全尘隔尘效率不断下降,且呼吸性粉尘隔尘效率提升不明显;(4)旋转风幕对于不同粒径的粉尘的隔尘效率存在差异,随着粉尘粒径的增加,旋转风幕的隔尘效率不断下降。
[Abstract]:In order to study the dust isolation mechanism and dust isolation efficiency of rotary air curtain in fully mechanized coal mining face, the dust concentration distribution and dust isolation efficiency of fully mechanized coal mining face under rotary air curtain dust isolation were studied by model experiments. The results show that under the same working conditions, the dust isolation efficiency of the rotating air curtain is higher than that of the ordinary air curtain, and the dust isolation advantage of the respiratory dust is more obvious than that of the ordinary air curtain.) the influence of the outlet wind speed on the dust isolation effect is greater than that of the ordinary air curtain. There is an optimal outlet wind speed under which the rotating curtain maintains a higher dust isolation efficiency for both the whole dust and the breathing dust. When the outlet wind speed is lower than the optimal wind speed, With the increase of the wind speed, the dust isolation efficiency of the rotating wind curtain increases significantly with the increase of the wind speed, and when the outlet wind speed is higher than the optimal wind speed, the dust isolation efficiency decreases with the increase of the outlet wind speed. And the dust isolation efficiency of the respiratory dust is not obvious. 4) the dust isolation efficiency of the rotating air curtain is different for the dust with different particle size, and the dust isolation efficiency of the rotating air curtain decreases with the increase of the dust particle size.
【作者单位】：湖南科技大学能源与安全工程学院;湖南科技大学煤矿安全开采技术湖南省重点实验室;
【基金】：国家自然科学基金资助项目(50974040,51306047) 湖南省自然科学基金青年人才联合培养基金资助项目(13JJB009)
【分类号】：TD714.4

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