基于数值模拟的强制通风条件下掘进工作面气流与粉尘规律研究  

Airflow and dust patterns in excavation face under forced ventilation conditions based on numerical simulation

作　　者：王东伟 WANG Dongwei(CHN Energy Coal Coking Co.,Ltd.,Wuhai016000,China)

机构地区：[1]国家能源集团煤焦化有限责任公司,内蒙古乌海016000

出　　处：《陕西煤炭》2025年第3期62-67,139,共7页Shaanxi Coal

摘　　要：通过CFD模拟探讨了掘进工作面强制通风条件下不同粒径粉尘的分布特性及送风速度变化对粉尘分布的影响。研究发现,总气流强度随掘进面距离的增加而减小,且回流侧气流强度高于进口侧。粉尘分布直接受气流场强度影响,粒径越大的粉尘越难到达出风管一侧,尤其是中、细颗粒粉尘在煤壁一侧含量较高。此外,超细颗粒粉尘在整个巷道中可长时间悬浮,但会随气流逐渐减弱而缓慢沉降。结果表明,通过优化除尘设备的选择和位置,结合适当的送风速度调整,可以有效控制矿井粉尘,尤其是对于超细颗粒粉尘的控制,同时提出了进一步研究该矿主要产尘区的粉尘分布情况的建议。This study explores the distribution characteristics of different particle sizes of dust under forced ventilation conditions in excavation working faces through CFD simulation,and the influence of changes in air supply speed on dust distribution.Research has found that the total airflow intensity decreases with increasing distance from the excavation face,and the airflow intensity on the return airflow side is higher than that on the inlet side.The distribution of dust is directly affected by the intensity of the airflow field,and the larger the particle size,the more difficult it is for the dust to reach the side of the air duct,especially for medium and fine particle dust with a higher content on the coal wall side.In addition,ultrafine particle dust can be suspended for a long time in the entire roadway,but slowly settles as the airflow gradually weakens.The results indicate that by optimizing the selection and location of dust removal equipment,combined with appropriate adjustment of air supply speed,mine dust can be effectively controlled,especially for the control of ultrafine particle dust.Suggestions for further research on the dust distribution in the main dust producing areas of the mine are proposed.

关 键 词：粉尘 粉尘分布 粒子大小 CFD模拟 

分 类 号：TD714.4[矿业工程—矿井通风与安全]