矿井水幕帘降尘参数优化实验研究  

Experimental study on dust-control by water curtain in underground mines

作　　者：谭聪[1,2] 蒋仲安[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]北京市劳动保护科学研究所,北京100054

出　　处：《中国矿业大学学报》2015年第6期1002-1007,共6页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(51274024)

摘　　要：为了得到降尘水幕帘对巷道风流的影响规律,确定其最优降尘参数,设计了模拟井下巷道通风及水幕帘降尘实验平台.采用正交实验法,研究了纱网网格、喷嘴类型、喷嘴与纱网布置位置等参数对巷道风速和降尘效果的影响.结果表明:纱网网格为2mm×2mm时,水幕帘对巷道风流阻碍作用较大,纱网网格为4mm×4mm时,降尘效果欠佳,最佳纱网网格为3mm×3mm,此时全尘降尘效率达到83.95%,呼尘降尘效率达到73.45%.同时气水雾化喷嘴降尘效果优于中压水喷嘴,喷嘴靠近纱网的布置方式优于纱网布置在喷嘴下风向一段距离.In order to derive the influence parameters of dust-reduction water curtain on roadway airflow velocity and determine the optimal parameters for dust-reduction an experiment platform was designed to simulate conditions of tunnel ventilation and dust-reduction by water curtain.The orthogonal experimental method was used to study the effects of gauze hole size,nozzle types,the relative position between gauze and nozzle on dust-reduction efficiency.The results showed that when the size of gauze hole is 2mm×2mm,the water curtain will clearly block the roadway airflow.However,while the size of gauze hole is 4mm×4mm,the water curtain will have poor dust-reduction effect.In addition,the best size of gauze hole should be 3mm×3mm,in which case the dust-reduction ratios of total dust and respirable dust reach 83.95%and 73.45%respectively.Meanwhile,the dust-reduction effect of air-mist nozzle is better than that of medium pressure nozzle;the way that gauze located close to nozzle is superior to that gauze located some distance at the downwind side of nozzle.

关 键 词：水幕帘 降尘技术 巷道风速 正交试验 降尘效率 

分 类 号：TD714.2[矿业工程—矿井通风与安全]