并联空气幕对隔断巷道风流效果的影响分析
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摘要
为了解决矿井通风在冬季出现的风流反向问题,本文以云冈矿为工程背景,通过理论计算、数值模拟、现场效果分析及检验等方法对并联空气幕对巷道隔断风流的效果进行研究,数值模拟可视化巷道风速及静压分布,循环风流区域无风流,即风速为0,从而证明了空气幕可以阻断风流。现场试验结果表明,双机并联增阻及隔断能力要好于单机幕,局部阻力变化程度随着角度的增大而增大。
In order to solve the problem of reverse flow of mine ventilation in winter, Yungang Mine was taken as the engineering background, and the effect of parallel air curtain on the roadway airflow by theoretical calculation, numerical simulation, field effect analysis and inspection was studied. The numerical simulation visualized the wind speed and static pressure distribution of the roadway. There was no wind flow in the circulating airflow area, the wind speed was 0, which proved that the air curtain can block the wind flow. The field test results showed that the parallel increased resistance and the blocking capacity of the two machines were better than the single machine screen, and the degree of local resistance changed with the increase of the angle.
In order to solve the problem of reverse flow of mine ventilation in winter, Yungang Mine was taken as the engineering background, and the effect of parallel air curtain on the roadway airflow by theoretical calculation, numerical simulation, field effect analysis and inspection was studied. The numerical simulation visualized the wind speed and static pressure distribution of the roadway. There was no wind flow in the circulating airflow area, the wind speed was 0, which proved that the air curtain can block the wind flow. The field test results showed that the parallel increased resistance and the blocking capacity of the two machines were better than the single machine screen, and the degree of local resistance changed with the increase of the angle.
引文
[1]陈建强,魏引尚.碱沟煤矿通风系统稳定性分析研究[J].西安科技大学学报,2010,30(5):531-535.
[2]程卫民,聂文,姚玉静,等.综掘工作面旋流气幕抽吸控尘流场的数值模拟[J].煤炭学报,2011,36(8):1 342-1 348.
[3]赵玲,蒋仲安.循环型空气幕多机联合隔断巷道风流效果的分析[J].中南大学学报(自然科学版), 2013,44(10):4 238-4 243.
[4]蒋仲安,罗晔,牛伟.矿井空气幕隔断巷道风流影响因素分析及实验[J].采矿与安全工程学报,2013,30(1):149-153.
[5]朱冬,杨庆俊,包钢.气动充放气系统二维非定常流场数值模拟[J].中南大学学报:自然科学版,2011,42(6):1 663-1 668.
[6]刘建,姚海飞,魏传光,等.掘进工作面湿式离心除尘器的结构优化及数值模拟[J].煤炭学报,2010,35(3):424-428.
[7]王海宁.硐室型矿井风流调控技术[J].重庆大学学报,2012,35(5):126-131.
[8]赵玲,蒋仲安.循环型矿用空气幕出口风速对隔断风流效果影响的数值模拟[J].矿业安全与环保,2011,38(4):18-20.
[9]朱红青,刘星魁.顶煤自燃危险性分析及注氮防火的理论研究[J].煤炭学报, 2012(6):1 015-1 020.
[10]范京道.矿井风量波动与漂移的溯源分析研究[D].西安科技大学,2013.
[2]程卫民,聂文,姚玉静,等.综掘工作面旋流气幕抽吸控尘流场的数值模拟[J].煤炭学报,2011,36(8):1 342-1 348.
[3]赵玲,蒋仲安.循环型空气幕多机联合隔断巷道风流效果的分析[J].中南大学学报(自然科学版), 2013,44(10):4 238-4 243.
[4]蒋仲安,罗晔,牛伟.矿井空气幕隔断巷道风流影响因素分析及实验[J].采矿与安全工程学报,2013,30(1):149-153.
[5]朱冬,杨庆俊,包钢.气动充放气系统二维非定常流场数值模拟[J].中南大学学报:自然科学版,2011,42(6):1 663-1 668.
[6]刘建,姚海飞,魏传光,等.掘进工作面湿式离心除尘器的结构优化及数值模拟[J].煤炭学报,2010,35(3):424-428.
[7]王海宁.硐室型矿井风流调控技术[J].重庆大学学报,2012,35(5):126-131.
[8]赵玲,蒋仲安.循环型矿用空气幕出口风速对隔断风流效果影响的数值模拟[J].矿业安全与环保,2011,38(4):18-20.
[9]朱红青,刘星魁.顶煤自燃危险性分析及注氮防火的理论研究[J].煤炭学报, 2012(6):1 015-1 020.
[10]范京道.矿井风量波动与漂移的溯源分析研究[D].西安科技大学,2013.