Effects of meteorological conditions on the air quality in deep open - pit mines in Vietnam

  • Affiliations:

    1 Hanoi University of Mining and Geology, Hanoi, Vietnam
    2 Center for Mining, Electro - Mechanical Research, Hanoi, Vietnam
    3 College of Engineering, Dong - A University, Busan, Korea
    4 Hanoi Department of Industry and Trade, Hanoi, Vietnam

  • *Corresponding:
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  • Received: 15th-Apr-2021
  • Revised: 23rd-July-2021
  • Accepted: 9th-Aug-2021
  • Online: 31st-Aug-2021
Pages: 1 - 14
Views: 2494
Downloads: 1277
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Air quality in open - pit mines is the big concern relating to the occupational safety and healthy, as well as the surrounding environment. In the past years, management of the air quality in open - pit mines is challenge due to the limit of science and technology in the assessment of the effects of meteorological conditions and toxics in open - pit mines. Therefore, this study assessed the effects of meteorological conditions on the air quality in deep open - pit mines. The air velocity distribution and the dispersal mechanism of the air quality were evaluated at the Coc Sau open - pit coal mine (Vietnam) based on the measured and simulated datasets. Two fixed stations were set up in the ground to monitor the wind direction, wind speed and the temperature to evaluate the stable of the actual ozone layer based on the Pasquill ozone layer. The datasets were also used to analysis and 3D simulate to understand the air pollution mechanism in the Coc Sau open - pit coal mine. On the other hand, the change of the temperature in vertical was measured to determine the to determine the existence of a temperature inversion layer. It is considered as the main reason for the air quality reduction and the natural air circulation in deep open - pit mines. The findings indicated the existence of the temperature inversion layer and they are useful for proposing the artificial ventilation in deep open - pit mine, aiming to improve the air quality in open - pit mines. The 3D simulations also revealed that the high dust and gas concentrations in open - pit mines are due to the stable of the ozone layer.

How to Cite
., N.Xuan Bui, ., H.Nguyen, Lee, C., ., T.Qui Le and Bui, T.Van 2021. Effects of meteorological conditions on the air quality in deep open - pit mines in Vietnam (in Vietnamese). Journal of Mining and Earth Sciences. 62, 4 (Aug, 2021), 1-14. DOI:https://doi.org/10.46326/JMES.2021.62(4).01.

Clive Grainger và Robert N Meroney, (1993). Dispersion in an open - cut coal mine in stably stratified flow. Boundary - layer meteorology. 63(1). 117 - 140.

Craig B. Clements, C. David Whiteman và John D. Horel, (2003). Cold - air - pool structure and evolution in a mountain basin: Peter Sinks, Utah. Journal of Applied Meteorology. 42(6). 752 - 768.

D. Bruce Turner (2020), Workbook of atmospheric dispersion estimates: an introduction to dispersion modeling, CRC press.

Jitesh Kumar Mittal (2015). Modelling the Dispersion of Dust Generated From Open Pit. Mining.

John L. Woodward (2010), Estimating the flammable mass of a vapor cloud, 21, John Wiley and Sons.

L. Morawska, M. R. Moore và Z. D. Ristovski, (2004). Impacts of Ultrafine Particles. Australian Government. Department of the Environment and Heritage Health. 9.

Lewis Fry Richardson, (1926). Atmospheric diffusion shown on a distance - neighbour graph. Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character. 110(756). 709 - 737.

Mark F. Hibberd, (2003). Nocturnal dispersion meteorology in an urban valley. Clean Air and Environmental Quality. 37(4). 34.

Ngoc - Tuoc Do, Won - Ho Heo và Ngoc - Bich Nguyen (2020). Evaluating the Air Flow and Gas Dispersion Behavior in a Deep Open - Pit Mine Based on Monitoring and CFD Analysis: A Case Study at the Coc Sau Open - Pit Coal Mine (Vietnam). Proceedings of the International Conference on Innovations for Sustainable and Responsible Mining: ISRM 2020 - Volume 1. Springer Nature, 224.

Partha Sarathi Panda và Rajat Sahu, (2013). Ambient air quality assessment in opencast metal mines.

S. R. Hanna, G. A. Briggs và R. P. Hosker Jr, (1982), Handbook on atmospheric diffusion. Technical Information Center, US Department of Energy. DOE/TIC - 11223.

Sumanth Chinthala và Mukesh Khare, (2011). Particle dispersion within a deep open cast coal mine. Air Quality - Models and Applications.

Torben Mikkelsen và Morten Nielsen, (2003). Modelling of pollutant transport in the atmosphere. MANHAZ position paper, Ris∅ National Laboratory. Denmark.

Vanduc Nguyen, Dooyoung Kim, Wonho Hur và Changwoo Lee, (2018). Experimental and CFD study on the exhaust efficiency of a smoke control fan in blind entry development sites. Tunnel and Underground Space. 28(1). 38 - 58.

Yakunin, A. G., (2017). 3D Ultrasonic Anemometer with tetrahedral arrangement of sensors. In Journal of Physics: Conference Series (Vol. 881, No. 1, p. 012030). IOP Publishing.

Zunaira Asif và Zhi Chen, (2016). Environmental management in North American mining sector. Environmental Science and Pollution Research. 23(1). 167 - 179

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