机掘工作面气流特性与粉尘浓度数值模拟  

Numerical simulation study of airflow characteristics and dust concentration on mechanized heading face

作　　者：骆伟[1] 刘荣华[1,2] 崔海蛟[1] 汤梦 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411201 [2]湖南省矿山通风与除尘装备工程技术研究中心,湖南湘潭411201

出　　处：《矿业工程研究》2013年第4期18-22,共5页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(50974060)

摘　　要：利用FLUENT软件对机掘工作面三维流场进行数值模拟计算,获得了机掘工作面的气流特性及粉尘分布规律.结果表明:在压、吸风筒的共同作用下,风流在掘进头处会产生回流和漩涡,抽吸气流可以将粉尘屏蔽在工作面端头,防治粉尘向外扩散;巷道两侧粉尘浓度随着吸吹比的增大而减小,而风速在吸风筒一侧随着吸吹比的增大而增大,在压风筒一侧随着吸吹比的增大先增大后减小.当吸吹比达到0.8时能获得较为理想的降尘效果.This paper uses CFD software to simulate three-dimensional flow field at the mechanized face.It obtains the airflow characteristics and dust distribution law.Results show that airflow will produce a reflux and whirlpool at the head of mechanized face under the action of press and suction cylinder,and the suction airflow can shield dust and air in the working face and prevent dust diffusion.Besides,dust concentration in the roadway decreases with the suction-blow rate increasing.And air velocity increases on the side of suction cylinder as the suction-blow rate increases.However,on the side of press cylinder,it first increases and then decreases when suction-blow rate increases.Ideal effect of dust fall will obtain when suction-blow rate reaches 0.8.

关 键 词：机掘工作面 数值模拟 气流特性 粉尘浓度 吸吹比 

分 类 号：TD712.2[矿业工程—矿井通风与安全]