综掘面尘源位置对负压抽风口位置的影响  

Influence of dust source location in fully-mechanized excavation face on location of negative pressure suction opening

作　　者：张艳娇 徐向宇[1,2,3] 姜婉 姚龙龙 ZHANG Yanjiao;XU Xiangyu;JIANG Wan;YAO Longlong(State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454000,China;School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454000,China;Coal Production Safety Collaborative Innovation Center in Henan Province,Jiaozuo Henan 454000,China)

机构地区：[1]河南理工大学瓦斯地质与瓦斯治理国家重点实验室培育基地,河南焦作454000 [2]河南理工大学安全科学与工程学院,河南焦作454000 [3]煤炭安全生产河南省协同创新中心,河南焦作454000

出　　处：《中国安全科学学报》2021年第4期147-155,共9页China Safety Science Journal

基　　金：国家自然科学基金资助(51404100,51574112);河南理工大学青年基金资助(Q2017-1);教育部创新团队发展计划项目(IRT_16R22)。

摘　　要：为探究综掘机配套抽风口位置对巷道除尘效果的影响,利用FLUENT软件建立综掘巷道相似几何模型,开展粉尘从不同尘源位置释放时,压入式通风系统和综掘机配套抽尘系统的流场及粉尘场模拟研究。结果表明:综掘工作面压入式通风系统的粉尘扩散范围在距工作面1~2 m处;综掘机配套抽尘口位置在距工作面1 m时的风流特征最利于除尘且此时各个尘源位置巷道内的粉尘均得到明显改善;当采用综掘机配套抽尘技术后,综掘工作面各个尘源释放粉尘时,巷道内的总体粉尘质量浓度都得到降低,平均除尘效率在80%以上,最高可达93%,可以很好地满足煤矿井下的降尘要求。In order to study influence of suction opening location of integrated excavating machine on dust removal effect of roadway,a similar geometric model of roadway was established by using FLUENT software,and simulated researches on flow field and dust field of press-fit ventilation system and dust extraction system of integrated excavating machine were developed when dust was released from different dust sources.The results show that dust diffusion range of press-fit ventilation system of fully mechanized excavation face is 1-2 m away from head.Wind flow characteristics of suction location of integrated excavating machine at 1 m from head are most favorable for dust removal,and position of each dust source at this time dust in the roadway has been significantly improved.Dust extraction experiment of integrated excavating machine has also verified simulation results well.After adopting dust extraction technology of comprehensive excavator,overall dust concentration in the roadway is reduced when dust is released from various dust sources in the fully mechanized excavation face,and average dust removal efficiency is above 80%,up to 93%,which can well meet the dust reduction requirements of coal mines.

关 键 词：尘源位置 抽风口 综掘工作面 除尘效率 粉尘分布 

分 类 号：X936[环境科学与工程—安全科学]