硐室车辆尾气污染物扩散特性研究  

Diffusion property of vehicle tail gas pollutants in coal mine chamber

作　　者：张宏 张金贵 马亮 暴海英 陈照杰 张伟[4] 叶宇希 赵俊伟 ZHANG Hong;ZHANG Jin-gui;MA Liang;BAO Hai-ying;CHEN Zhao-jie;ZHANG Wei;YE Yu-xi;ZHAO Jun-wei(Shaanmei Shenmu Hongliulin Mining Co.,Ltd.,Yulin 719000,China;China University of Mining and Technology-Beijing,Beijing 100083,China;Shenmu City Energy Bureau,Yulin 719000,China;Anhui University of Science and Technology,Huainan 232000,China;School of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]陕煤集团神木红柳林矿业有限公司,陕西榆林719000 [2]中国矿业大学(北京),北京100083 [3]神木市能源局,陕西榆林719000 [4]安徽理工大学,安徽淮南232000 [5]山东科技大学安全与环境工程学院,山东青岛266590

出　　处：《煤炭工程》2022年第9期117-123,共7页Coal Engineering

摘　　要：为解决煤矿井下硐室内怠速状态下车辆排放的尾气严重威胁矿工职业健康的问题,以红柳林公司25211工作面硐室及WC19R(A)型胶轮车为研究对象,基于欧拉方法构建了组分输送模型,模拟分析了不同巷道风速影响下硐室内NO、NO_(2)、CO尾气的扩散特性。结果表明:当风速超过1.0m/s时,因巷道风速的增加,尾气受到硐室内横向涡流影响增强,向硐室口扩散现象逐渐显著;气体在扩散的过程中遵循菲克定律,两侧尾气浓度分别在距硐室口9.0m和1.0m左右达到峰值,同时获得了三种气体的拟合函数关系。经现场验证,模拟结果与现场检测结果误差小于23.7%。The exhaust gas emitted by idling vehicles in underground chamber of coal mine seriously threatens the occupational health of coal miners.Taking the 25211 working face chamber of Hongliulin Coal Mine and the WC19R(A)rubber-tyred vehicle as the research objects,a component transport model was constructed based on the Euler method,to simulate and analyze the diffusion characteristics of NO,NO_(2) and CO exhaust gas in the chamber under different roadway wind speeds.The results show that:when the wind speed exceeds 1.0m/s,due to the increase of wind speed in the roadway,the exhaust gas is affected by the lateral vortex in the chamber,and the exhaust gradually diffuses to the chamber entrance;the gas diffusion followed Fick’s law,and the exhaust gas concentrations on both sides reach their peaks at about 9.0m and 1.0m from the chamber entrance,respectively,and the fitting functions of the three gases are obtained.According to the on-site verification,the error between the results of the simulation and on-site test is within 23.7%.

关 键 词：煤矿硐室 车辆尾气 数值仿真 进风风速 扩散机制 

分 类 号：TD714[矿业工程—矿井通风与安全]