巷道全断面雾幕捕尘系统水膜分析及除尘效果研究  

Study on water film analysis and dust removal effect of tunnel full-section fog screen dust capture system

作　　者：冯超 邱进伟[1] 张乔东 FENG Chao;QIU Jinwei;ZHANG Qiaodong(School of Mining and Safety Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001

出　　处：《华北科技学院学报》2025年第1期18-25,共8页Journal of North China Institute of Science and Technology

基　　金：“十四五”国家重点研发计划项目(2022YFC2503201);煤炭安全精准开采国家地方联合工程研究中心开放基金资助(EC2023009)。

摘　　要：为了缓解巷道粉尘对职工健康的危害,采用数值模拟、实验测试和现场试验研究了全断面雾幕捕尘网的除尘机制。基于多孔介质模型和低阻理论,研究了不同孔径捕尘网对除尘阻力的影响,并结合射流破碎和液膜破碎雾化理论,分析了不同喷雾流量和孔径形成的水膜特性及其稳定性。实验结果表明,巷道风速与除尘阻力呈正相关,除尘效率随风速先增后减,最佳风速为1.09 m/s。最终确定最佳喷头流量为4.2 L/min,捕尘网孔径为100目,现场应用后除尘率达93.1%。In order to alleviate the harm of roadway dust to workers'health,the dust removal mechanism of the full section fog screen is studied by numerical simulation,experimental test and field test.Based on the porous media model and the low resistance theory,the influence of different aperture on the dust removal resistance is studied,and the characteristics and stability of the water film formed by different spray flow and aperture are analyzed in combination with the jet breaking and liquid film breaking atomization theory.The experimental results show that the wind speed of the roadway is positively correlated with the dust removal resistance,the dust removal efficiency increases first and then decreases with the wind speed,and the optimal wind speed is 1.09 m/s.Finally,the optimal nozzle flow rate is 4.2 L/min,the dust net aperture is 100 mesh,and the dust removal rate is 93.1%after field application.

关 键 词：喷雾流量 捕尘网孔隙 水膜厚度 除尘 液膜破碎雾化 

分 类 号：TD714.4[矿业工程—矿井通风与安全]