不同设置方式下的防风网抑尘效果对比  

COMPARISON OF DUST-PREVENTION OF WINDBREAK WITH DIFFERENT SETTING SCHEMES

作　　者：丛晓春[1] 曹世青[1] 陈志龙[1] 杨树利[1] 孙旭杰[1] 

机构地区：[1]山东科技大学土木建筑学院,山东青岛266510

出　　处：《环境工程》2011年第5期67-70,79,共5页Environmental Engineering

基　　金：国家自然科学基金项目(50808115);山东省自然科学基金(2009ZRB01240);研究生科技创新基金(YCA110206)

摘　　要：为对比防风网不同设置方式对露天堆场起尘的影响,以某露天煤堆场为例,结合现场实测数据对数值计算方法进行了验证,并根据实际堆场设计了4种设网方案。通过计算各料堆表面摩阻风速的分布,统计出了各方案下的全年起尘率。结果表明:当防风网呈"口"型设置时,抑尘效果最好;沿全年主导风向上方向呈"L"型设置时,抑尘效果最差。比较"П"型半包围设网方案,则沿全年主导风向上方向设置比下方向设置抑尘效果好。For the comparison of dust-preventing effect of porous windbreaks with different setting schemes,an open coal yard was taken as a confirmation example on the basis of measurement data and four schemes of the porous windbreaks were proposed according to the actual conditions of stockpiles.The friction velocities above the piles were obtained respectively,and the rate of dust emission of each scheme was calculated.It was found that all enclosure along the yard led to the best overall protective effect from wind erosion,while two-side protection against the windward of dominant wind direction had the worst effect.Moreover,three-side windbreaks installed along the windward against the dominant wind direction were more effective than those along the leeward.

关 键 词：露天煤垛场 防风网 抑尘效果 方案比较 

分 类 号：TD714.4[矿业工程—矿井通风与安全]