Numerical Simulation on Optimization of Blasting Smoke Ventilation Parameters in Blind Roadway Based on CFD
马东华MA Dong-hua;左淳ZUO Chun;
李智谋Ll Zhi-mou;张书刚ZHANG Shu-gang;安云龙AN Yun-long
(中核二十五建设有限公司,长沙410000 )
( China Nuclear 25th Construction Co.,Ltd., Changsha 410000 , China )
摘要:为研究独头巷道爆破后压入式通风炮烟运移规律,以衢州市某地下工程无轨大断面独头掘进巷道为研究对象,采用CFD方法对独头巷道内炮烟运移进行数值模拟,结果表明:①风筒安装高度、直径和出风口距掘进面的距离等条件一定时,增加通风风量，会降低CO浓度排至国家限制值以下的时间。②风筒安装高度、直径和出风口速度等条件一定时,风筒出风口与掘进面的距离介于10~13m为排炮烟的最优距离。③独头巷道长度大于60Om时,为保证工作人员的工作安全,安全通风时间应在排炮烟风量计算公式确定的通风时间基础上增加10min。
Abstract: The movement of blasting smoke in blind roadlway is numerically simulated using the CFD method in order to study themovement law of blasting smoke after blasting in blind roadway, using the trackless large section bl moadway of an underground poject inQuzhou as the research obiject.As a result of the findings, we can conclude that:① when the installation height of air duct, straightdiameter and the distance between air outlet and heading face are cetain, increasing the ventlation air volume will reduce the time for COconcentration to be discharged below the standardl.② When the installation height, diameter and air outlet speed of the air duct are certainthe distance between the air outlet of the air duct and the heading face is 10m~13m, which is the optimal distance for discharging blastingsmoke.③ When the length of blind roadway is greater than 60Om, in onder to ensure the work safety of workers, the safe ventlation timeshould be increased by 10min based on the ventilation time determined by the calculation formula of blasting smoke and air volume.
关键词:独头巷道;炮烟;CO浓度;CFD;数值模拟
Key words: blind roadway; blasting smoke; CO concentration; CFD; numerical simulation
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