中南大学学报（自然科学版）Issue(1)：350-358,9.DOI:10.11817/j.issn.1672-7207.2016.01.048
多向涡流风幕阻隔粉尘弥散的模拟实验
Simulation experiment on multi-direction whirling air curtain preventing dust diffusion
摘要
Abstract
Considering the problem that it is difficult to control the dust diffusion in tunnelling headings, a new type of multi-direction whirling air curtain generator was designed. Based on the self-designed analogous experimental platform, the law on wind migration of the multi-direction whirling air curtain and the separation of dust diffusion was proved. The results show that the greater the distance L c from multi-direction whirling air curtain to heading face, the less the press extraction ratio Y, the less the press wind volume Qf, and the less the axial pressure ratio Z, which is beneficial to the formation of the dust prevention wind flow field that points to the heading face. The law on the separation of dust diffusion prevention is that the dust mass concentration decreases and the fluctuation of it decreases basically with the increase of L c . When L c increases, the ability of dust diffusion prevention decreases first and then increases. The more Q f is, the less Y and Z are, which is beneficial to the separation of dust diffusion. After the ventilation parameters tend to a certain value, the uniform degree of the dust separation wind flow field and the ability of separate dust diffusion reach basically stable. Some excellent ventilation parameters of experimental heading face are determined: L c=20 m, Y=5:4, Q f=300 m3/min, and Z=1:9. With the above parameters, the average dust removal rate of the total coal dust and respirable dust are 95.85%and 94.32%, respectively.关键词
掘进面/多向涡流风幕/阻尘风流场/粉尘弥散/模拟实验Key words
heading face/multi-direction whirling air curtain/dust separation wind flow field/dust diffusion/simulation experiment分类
矿业与冶金引用本文复制引用
聂文,刘阳昊,程卫民,周刚,薛娇,马骁..多向涡流风幕阻隔粉尘弥散的模拟实验[J].中南大学学报（自然科学版）,2016,(1):350-358,9.基金项目
国家自然科学基金煤炭联合基金重点资助项目(U1261205)；国家青年基金资助项目(51404147)；中国博士后科学基金资助项目(2015M570601)；山东科技大学人才引进科研启动基金项目(2014RCJJ029)(Project(U1261205) supported by the Key Program of the Coal Joint Funds of the National Natural Science Foundation of China （U1261205）
Project(51404147) supported by the National Natural Science Foundation for Young Scientists of China （51404147）
Project(2015M570601) supported by the China Postdoctoral Science Foundation （2015M570601）
Project(2014RCJJ029) supported by the Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents) （2014RCJJ029）
