风流场作用下煤矿井下燃油车辆尾气迁移规律  

Exhaust gas migration law of underground fuel vehicles in coal mine under the action of air flow field

作　　者：苗彦平 石高峰 涂庆毅 惠双琳 郑旭鹤 王宏梁 折刚 MIAO Yanping;SHI Gaofeng;TU Qingyi;XI Shuanglin;ZHENG Xuhe;WANG Hongliang;SHE Gang(Shenmu Hongliulin Mine Co.,Ltd.,Shaanxi Coal Group,Yulin 719000,China;School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232001,China;Northern Shaanxi Mining Co.,Ltd.,Shaanxi Coal and Chemical Industry Group,Yulin 719000,China)

机构地区：[1]陕煤集团神木红柳林矿业公司,陕西榆林719000 [2]安徽理工大学安全科学与工程学院,安徽淮南232001 [3]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001 [4]陕煤集团陕北矿业有限公司,陕西榆林719000

出　　处：《西安科技大学学报》2022年第5期894-901,共8页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金项目(52004008);安徽省自然科学基金项目(2008085QE260);陕煤集团神木红柳林矿业有限公司校企合作项目(SMHLL-JS-YJ2020006)。

摘　　要：随着煤矿机械化程度的提高,燃油车辆已经广泛应用于井下运输,由此带来的尾气污染不容忽视,而尾气治理的关键在于掌握尾气污染物的运移规律。以陕北矿区红柳林煤矿15206内撤架巷为测试区域,对区域内停放车辆在怠速状态下不同位置处的CO,NO和NO浓度进行测量,分析3种主要尾气污染物的运移分布规律。结果表明:燃油车辆排气管口CO浓度最低为75.7×10,最高达到107.4×10;NO浓度最低为14.6×10,最高达到23.3×10;NO浓度最低为26.4×10,最高达到43.8×10。3种主要污染物排放至巷道后浓度均呈现降低趋势,在距离排气管口3 m的值均远低于排气管出口处。数值模拟结果与现场采集数据呈现一致性,在排气管口附近出现浓度峰值,进入巷道空间后浓度明显下降。另外,在靠近车辆排气管口一侧的巷道行人空间及车身后方空间产生明显聚集,且无法通过风流短时间被稀释。上述研究证明尾气污染物在排气管出口经过短暂聚集后会排放至巷道内,经风流稀释后尾气浓度接近巷道内环境数值。With the increase of mechanisation in coal mines, fuel vehicles have been widely used for underground transport, resulting in exhaust pollution that cannot be ignored, and the key to exhaust gas management lies in understanding the transport law of exhaust pollutants.In this paper, the concentrations of CO,NO,and NOwere measured at different locations of parked vehicles at idle speed in the 15206 inner withdrawal lane of the Hongliulin coal mine in northern Shaanxi province, and the transport laws of three main exhaust pollutants were analyzed.The results show that the concentration of CO at the exhaust outlet of fuel vehicles ranged from the lowest of 75.7×10to the highest of 107.4×10;the concentration of NOranged from the lowese of 14.6×10to the highest of 23.3×10;the concentration of NO ranged from the lowest of 26.4×10to the highest of 43.8×10.The concentrations of the three main pollutants all showed a decreasing trend after being emitted to the roadway, and the values at 3 m from the exhaust outlet were much lower than those at the exhaust outlet.The numerical simulation results are consistent with the data collected in the mine, with peak concentrations occurring near the exhaust outlet and decreasing significantly after entering the roadway space.In addition, the pedestrian space in the roadway near the side of the vehicle’s exhaust outlet and the space behind the body of the vehicle produce significant accumulation unable to be diluted by wind flow for a short period of time.The results indicate that the exhaust gas pollutants will be discharged into the tunnel after a short time gathering at the exhaust pipe outlet, and the exhaust gas concentration is close to the environmental value in the roadway after dilution by airflow.

关 键 词：撤架巷 车辆尾气 运移规律 怠速运行 数值模拟 

分 类 号：X936[环境科学与工程—安全科学]