采场爆破炮烟扩散规律的Fluent数值模拟
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摘要
为研究采场爆破后炮烟的扩散规律,获取通风设计的合理参数,以石人沟铁矿-105水平100号采场为研究对象,运用Fluent软件对采场爆破炮烟扩散进行数值模拟,并与现场实测数据进行对比。结果表明:炮烟扩散规律受风流的影响显著,通风2~60s,炮烟浓度随距工作面距离的增加而减小,通风60~1800s,炮烟浓度分布逐渐向漩涡状转变;通风1800s时,炮烟浓度呈漩涡状分布,并不随通风的情况而改变。模拟结果与实测结果基本一致。
In order to study the blasting-fume diffusion regularities after blasting in stope and obtain rational parameters for the design of blasting-fume by ventilation,taking No.100 stope of Shirengou Iron Mine as the object of study,the regularities of blasting-fume diffusion in stope after blasting were simulated by FLUENT software.The simulated results were compared with the field measured data.The results showed that the flow field of airflow has a significant effect on the distribution of blasting fume concentration.The concentration of blasting fume tends to decrease with the distance increase from the working face in 2~60s after blasting before being changed to the shape of swirl in 60~1800safter blasting,and becomes the shape of swirl after 1800 s and remains unchanged afterwards.The simulated results are essentially consistent with the measured data.
In order to study the blasting-fume diffusion regularities after blasting in stope and obtain rational parameters for the design of blasting-fume by ventilation,taking No.100 stope of Shirengou Iron Mine as the object of study,the regularities of blasting-fume diffusion in stope after blasting were simulated by FLUENT software.The simulated results were compared with the field measured data.The results showed that the flow field of airflow has a significant effect on the distribution of blasting fume concentration.The concentration of blasting fume tends to decrease with the distance increase from the working face in 2~60s after blasting before being changed to the shape of swirl in 60~1800safter blasting,and becomes the shape of swirl after 1800 s and remains unchanged afterwards.The simulated results are essentially consistent with the measured data.
引文
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[3]蒋仲安,王伟.降低爆破烟尘的降尘剂配方的实验研究[J].煤炭学报,2011,36(10):1 720-1 724.
[4]孙佳.露天采矿爆破烟尘行为模拟及其环境效应评价系统的研究[D].北京:北京科技大学,2006.
[5]孙佳,蒋仲安,倪文.爆破烟尘行为的实时模拟[J].爆破,2006,23(1):1-6.
[6]张秀华.回采爆破空间中有害物质扩散规律模拟与分析[D].长沙:中南大学,2010.
[7]刘峰.回采爆破烟尘行为模拟及通风净化研究[D].武汉:武汉科技大学,2008.
[8]蒋仲安,万善福,孙佳.基于粒子系统的爆破烟尘运动的模拟研究[J].北京科技大学学报,2007,29(S2):25-29.
[9]于勇,张俊明,姜连田.FLUENT入门与进阶教程[M].北京:北京理工大学出版社,2008.