摘要
为解决某高瓦斯矿综掘面粉尘污染问题,通过COMSOL软件对压入式通风下粉尘于不同区域运移特性进行研究;选取3种排尘系统参数(风筒风速、压风距离、风筒悬挂高度),以进风侧、回风侧及掘进机操作台位置粉尘质量浓度为分析指标,借助大尺寸工程模型对每种参数下4个方案进行相似实验,优选排尘系统参数。结果表明:压风出口处负压影响下掘进机机尾存在粉尘回流,并于掘进机操作台处积聚;排尘系统参数以风筒风速16~20 m/s、压风距离8~11 m、风筒悬挂高度3.4~3.7 m设置时,掘进机操作台位置最大粉尘质量浓度降低49.02%,排尘40 min清除掘进机两侧96.58%浮尘,提升了压入式通风为基础的排尘系统抑尘效果及排尘效率。
Aiming at the problem of dust pollution in a fully mechanized mining face of a high gas mine,the movement characteristics of dust in different areas under press-in ventilation were studied with the COMSOL software;Select three kinds of dust removal system parameters(wind speed of air duct,compressed air distance,suspension height of air duct),take the dust mass concentration at the air inlet side,return air side and the position of the roadheader console as the analysis index,and use a large-scale engineering model,conduct similar experiments on four schemes under each parameter to optimize the parameters of the dust removal system.The results show that under the influence of negative pressure at the pressure air outlet,there is dust backflow at the end of the roadheader and it accumulates at the roadheader console;when the parameters of the dust removal system are set with the wind speed of the air duct of 16-20 m/s,the compressed air distance of 8-11 m,and the suspension height of the air duct of 3.4-3.7 m,the maximum dust mass concentration at the operation console of the roadheader will be reduced by 49.02%,and 96.58%floating dust on both sides of the roadheader will be removed after 40 min of dust removal,which improves the dust suppression effect and dust removal efficiency of the dust removal system based on the press-in ventilation.
作者
王晖
王宏伟
曹孟涛
WANG Hui;WANG Hongwei;CAO Mengtao(College of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Center of Shanxi Engineering Research for Coal Mine Intelligent Equipment,Taiyuan University of Technology,Taiyuan 030024,China;College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《煤炭技术》
CAS
2024年第1期138-142,共5页
Coal Technology
基金
山西省揭榜招标项目(20201101008)。
关键词
粉尘防治
综掘面
压入式通风
数值模拟
相似实验
大尺寸工程模型
dust prevention
fully mechanized mining face
press-in ventilation
numerical simulation
similar experiment
large-scale engineering model
