露天矿自卸卡车车速对粉尘扩散的影响研究

doi:10.16265/j.cnki.issn1003-3033.2017.04.027

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (4): 151-156.doi: 10.16265/j.cnki.issn1003-3033.2017.04.027

露天矿自卸卡车车速对粉尘扩散的影响研究

陈曦^1,2 讲师, 葛少成¹ 教授, 邓存宝^1,2 教授, 张兴华¹, 王式耀¹

1 辽宁工程技术大学安全科学与工程学院,辽宁阜新 123000
2 辽宁工程技术大学安全工程技术研究院,辽宁阜新 123000

收稿日期:2016-11-15 修回日期:2017-01-18 发布日期:2020-11-22
作者简介:陈曦 (1987—),男,辽宁瓦房店人,博士,讲师,主要从事大气污染控制与矿井通风除尘应用研究。E-mail: chenxi615520@126.com。
基金资助:
国家自然科学基金资助(51274116)。

Study on influence of self-discharging truck speed on dust spreading in open-pit

CHEN Xi^1,2, GE Shaocheng¹, DENG Cunbao^1,2, ZHANG Xinghua¹, WANG Shiyao¹

1 School of Safety Science and Engineering, Liaoning Technical University,Fuxin Liaoning 123000,China
2 Research Institute of Safety Engineering and Technology, Liaoning Technical University, Fuxin Liaoning 123000,China

Received:2016-11-15 Revised:2017-01-18 Published:2020-11-22

摘要/Abstract

摘要： 为准确描述露天矿自卸卡车运输扬尘的动态三维流场,采用动网格技术及离散相模型的粒子跟踪技术的耦合计算方法,模拟不同车速下自卸卡车周围气流与粉尘的分布特征,并进行现场实测。分析结果表明,粘附在路面的积尘是露天矿运输扬尘的发尘源,气流紊动扩散产生的剪切气流和诱导气流是粉尘颗粒飞扬的动因;随着时间的推移,大部分未来得及沉降的粉尘颗粒在卡车后方飞扬,道路粉尘质量浓度为418~956 mg/m³;随着自卸卡车车速的提高,近地面粉尘质量浓度与扬尘高度均增大。胜利东2号露天矿现场实测显示,运输扬尘污染情况严重,粉尘质量浓度高达1 932.2 mg/m³,各测试端面的实测值和模拟值相对误差小于6.64%。

关键词: 动网格技术, 自卸卡车, 露天矿, 运输扬尘, 数值模拟

Abstract: In order to describe the dynamics three-dimensional flow field of dust raised by a mining truck in an open-pit mine, the distribution of airflow fields and that of dust fields were simulated for different speeds of the truck by the dynamic mesh method and the discrete phase particle tracking technology, and real measurement was made in No.2 coal mine in Shenglidong mining area. The result shows that the dust resource comes from the dust bunny on the road, and both the shear airflow and the induced airflow caused by turbulence diffusion are the reason of dust particles spreading, that as time goes on, many dust particles diffuse behind the self-dumping truck before sedimentation, and the dust concentration is 418-956 mg/m³, that there is a positive correlation between both the dust concentration and the height colud of dust and the truck speed, that the dust concentration in No.2 coal mine in Shenglidong mining area is 1 932.2 mg/m³, and that the relative error between measured values and simulation values for each testing section is less than 6.64%.

Key words: dynamic mesh technology, off-highway trucks, open-pit, traffic dust, numerical simulation

中图分类号:

X964

陈曦, 葛少成, 邓存宝, 张兴华, 王式耀. 露天矿自卸卡车车速对粉尘扩散的影响研究[J]. 中国安全科学学报, 2017, 27(4): 151-156.

CHEN Xi, GE Shaocheng, DENG Cunbao, ZHANG Xinghua, WANG Shiyao. Study on influence of self-discharging truck speed on dust spreading in open-pit[J]. China Safety Science Journal, 2017, 27(4): 151-156.

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露天矿自卸卡车车速对粉尘扩散的影响研究

Study on influence of self-discharging truck speed on dust spreading in open-pit

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