摘要
根据流体力学的相关理论,利用Fluent对风筒不同布置位置条件下的掘进巷道流场进行了数值模拟,以考察风筒布置位置对掘进巷道流场的影响。结果表明:风筒布置在巷道侧壁时,巷道瓦斯浓度在未布置有风筒一侧侧壁及迎头处较大,在无风筒侧壁的掘进迎头处达到最大值;当风筒布置在巷道中部时,瓦斯浓度在巷道侧壁及迎头处较大,在巷道两侧侧壁的掘进迎头处达到最大。对比风筒布置在巷道侧壁时,风筒布置在巷道中部条件下的瓦斯浓度较小,但巷道内形成的涡流较多,经由掘进迎头折返的风流速度较小,不利于巷道风流循环及有害物质的排出。
Based on the theory of fluid mechanics,uses the Fluent software to pursue a numerical simulation for the flow field of driving roadway under different positions of ventilation duct,so as to investigate the Influence of ventilation duct position on the distribution of the flow field in the driving roadway.The results show that：when the ventilation duct is arranged on the side wall of the roadway,the gas concentration in roadway is larger on the side wall and the heading face where the ventilation duct is not arranged,and reaches the maximum value on the driving heading face of the side wall without ventilation duct.When the ventilation duct is arranged on the central part of the roadway,the gas concentration is larger in the side walls and the driving heading face of the roadway,it reaches the maximum at the driving heading face of two sides of the roadway.Compared with position of ventilation duct arranged on the side wall of the roadway,gas concentration of ventilation duct arranged on central part of the roadway is relatively small,but more vortexes are formed in roadway,and the wind speed backwards through driving heading face is smaller,which is not conductive to the circulation and discharge of harmful substances.
作者
王春霞
任青山
WANG Chun-xia;REN Qing-shan(School of Minning and Civil Engineering,Liupanshui Normal College,Liupanshui 553001,China;School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China)
出处
《煤炭技术》
CAS
2018年第10期241-243,共3页
Coal Technology
基金
贵州省科学技术联合基金资助项目(黔科合J字LKLS[2013]16号)
采矿工程省级特色重点学科资助项目(黔学位合字ZDXK[2015]9号)
贵州省矿山压力与岩层控制工程中心资助项目(黔教合KY[2012]027号)
关键词
数值模拟
风筒布置位置
瓦斯浓度
风流循环
numerical simulation
ventilation duct position
gas concentration
wind circulation
作者简介
王春霞（1983-），女，河南周口人，副教授，研究方向：矿山通风理论与技术、瓦斯灾害防治方法，电子信箱：wcx822530@126．com.
