化工进展2017，Vol.36Issue(10)：3610-3618,9.DOI:10.16085/j.issn.1000-6613.2017-0695
附壁风筒径向流量比及抽尘距离对综掘工作面隔尘风幕的影响
The effects of wind-splitting of a wall-attached air duct and dust exhaust distance on dust barrier air curtain in a fully mechanized working face
摘要
Abstract
To clarify the effects of wind-splitting ratio of a wall-attached air duct and dust exhaust distance on the air curtain formation and dust barrier effectiveness in the fully mechanized working area,3down610 fully mechanized working face in Jiangzhuang coal mine was developed.The airflow migration and dust diffusion for various wind-splitting ratios (50％-90％) and dust exhaust distances (2-5m) were numerically simulated by Ansys CFD.The results showed that the increase of wind-splitting ratio and decrease of dust exhaust distance are both conducive to the formation of effective dust barrier air curtain.For 3do~610 fully mechanized working face and those working faces with similar production conditions,an effective dust barrier air curtain can be formed under the parameters of both the wind-splitting ratio-80％ with dust exhaust distance-2m and wind-splitting ratio-90％ with dust exhaust distance-2-3m.For these parameters,the high concentration dust can be blocked within the area 7.5m from the working face.The measured results indicate that simulation results generally agree with each other in terms of air flow direction,the average relative error of air flow velocity is less than 13％.By applying the optimal parameters,the average total dust concentration and average respiratory dust concentration in measured section 7m away from the working face are decreased to 18.6mg/m3 and 8.lmg/m3,respectively.It demonstrates that the dust barrier effect is significant.关键词
附壁风筒/径向流量比例/抽尘距离/风幕隔尘/数值模拟Key words
wall-attached air duct/wind-splitting ratio/dust exhaust distance/air curtain dust barrier/numerical simulation分类
矿业与冶金引用本文复制引用
王昊,程卫民,孙彪,于海明..附壁风筒径向流量比及抽尘距离对综掘工作面隔尘风幕的影响[J].化工进展,2017,36(10):3610-3618,9.基金项目
国家自然科学基金煤炭联合基金重点项目(U1261205)、国家自然科学基金青年基金(51404147)、中国博士后科学基金第57批面上一等项目(2015M570601)及研究生科技创新项目(SDKDYC170101). （U1261205）
