Nghiên cứu này đã đánh giá ảnh hưởng của điều kiện khí tượng tới chất lượng không khí tại các mỏ lộ thiên sâu. Sự phân bố vận tốc không khí và cơ chế phân tán khí đã được đánh giá ở mỏ than lộ thiên sâu nhất Việt Nam (mỏ than Cọc Sáu-Quảng Ninh) dựa trên số liệu quan trắc và mô phỏng. | Journal of Mining and Earth Sciences Vol. 62 Issue 4 2021 1 - 14 1 Effects of meteorological conditions on the air quality in deep open - pit mines in Vietnam Nam Xuan Bui 1 2 Hoang Nguyen 1 2 Changwoo Lee 3 Duc Van Nguyen 3 Thao Qui Le 1 2 1 Faculty of Mining Hanoi University of Mining and Geology Vietnam 2 Center for Mining Electro - Mechanical Research Hanoi University of Mining and Geology Vietnam 3 Department of Energy and Mineral Resources College of Engineering Dong - A University Busan 49315 Korea ARTICLE INFO ABSTRACT Article history Air quality in open - pit mines is the big concern relating to the occupational Received 15th Apr. 2021 safety and healthy as well as the surrounding environment. In the past Accepted 23rd July 2021 years management of the air quality in open - pit mines is challenge due to Available online 31th Aug. 2021 the limit of science and technology in the assessment of the effects of Keywords meteorological conditions and toxics in open - pit mines. Therefore this Air quality study assessed the effects of meteorological conditions on the air quality in deep open - pit mines. The air velocity distribution and the dispersal Deep open - pit mine mechanism of the air quality were evaluated at the Coc Sau open - pit coal Meteorological condition mine Vietnam based on the measured and simulated datasets. Two fixed Simulation. 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 .
