scholarly journals Distribution Law of the Temperature Inversion Layer in a Deep Open-Pit Mine

ACS Omega ◽  
2021 ◽  
Author(s):  
Yuan Wang ◽  
Cuifeng Du
Keyword(s):  
Inversion Layer ◽  
Temperature Inversion ◽  
Open Pit Mine ◽  
Open Pit ◽  
Distribution Law ◽  
Deep Open Pit Mine

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

2021 ◽  
Vol 62 (4) ◽  
pp. 1-14
Author(s):  
Nam Xuan Bui . ◽  
Hoang Nguyen . ◽  
Changwoo Lee ◽  
Thao Qui Le . ◽  
Tuyen Van Bui ◽  
...  
Keyword(s):  
Air Quality ◽  
Coal Mine ◽  
Occupational Safety ◽  
Inversion Layer ◽  
Temperature Inversion ◽  
Ozone Layer ◽  
Meteorological Conditions ◽  
Open Pit ◽  
Open Pit Mines ◽  
Dispersal Mechanism

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.

Study on determination of the stable slope configuration for deep open pit mine

2008 ◽  
Vol 9 (9) ◽  
pp. 1208-1213
Author(s):  
Nai-long Zhu ◽  
Shi-xiong Zhang ◽  
Shu-yu Yue
Keyword(s):  
Open Pit Mine ◽  
Open Pit ◽  
Stable Slope ◽  
Deep Open Pit Mine

Stress redistribution in deep open pit mine Zhelezny at Kovdor iron ore deposit

2015 ◽  
Vol 51 (4) ◽  
pp. 659-665 ◽  
Author(s):  
A. A. Kozyrev ◽  
I. E. Semenova ◽  
V. V. Rybin ◽  
I. M. Avetisyan
Keyword(s):  
Iron Ore ◽  
Open Pit Mine ◽  
Stress Redistribution ◽  
Open Pit ◽  
Ore Deposit ◽  
Iron Ore Deposit ◽  
Deep Open Pit Mine

Management and engineering solutions to improve stripping equipment efficiency in Chernogorksy open pit mine

2018 ◽  
pp. 36-48
Author(s):  
G. N. Shapovalenko ◽  
S. N. Radionov ◽  
V. V. Gorbunov ◽  
V. A. Khazhiev ◽  
V. Yu. Zalyadnov ◽  
...  
Keyword(s):  
Open Pit Mine ◽  
Open Pit ◽  
High Concentration ◽  
Open Pit Mines ◽  
Blasting Operation ◽  
Internal Dump ◽  
Mining Conditions ◽  
Mining Front ◽  
Comparison Of Equipment

Chernogosky open pit mine integrates truck-and-shovel system of mining with overburden rehandling to internal dump with a set of walking excavators for rehandling of overburden to mined-out area of the pit. It is possible to improve efficiency of stripping in the conditions of Chernogorsky OPM by reducing percentage of stripping with more expensive handling system. The relevant research and solutions to this effect are presented in this article. Comparative characterization of mining conditions and parameters of mining systems applied is given for open pit mines Chernogorsky, Turnui, Nazarovsky, Vostochno-Beisky and Izykh. The comparative analysis points at the need to account for difficulty of mining and process sites in comparison of equipment productivity. High concentration of mining machines, which is conditioned by narrow mining front and simultaneous operation of five faces, as well as blasting operation implemented every 1-2 days, are recognized as the main constraints of excavator capacity in mining with direct dumping in Chernogorsky open pit mine. The management and engineering solutions implemented in the mine and resulted in higher efficiency of draglines are described.

Sign in / Sign up

Export Citation Format

Share Document