Study on distribution characteristics of wind flow in stopes of Haerwusu Open-Pit Coal Mine

doi:10.16265/j.cnki.issn1003-3033.2025.S1.0020

Abstract

Abstract:

In order to explore the distribution characteristics of wind flow in stopes of Haerwusu Open-Pit Coal Mine, a simple model of Haerwusu Open-Pit Coal Mine was constructed by CFD numerical simulation method, and the wind flow structure in stopes was simulated under the conditions of south, northwest, and southwest winds at speeds of 3, 5, and 7 m/s. The influence of different wind directions and wind speeds on the wind flow distribution in Haerwusu Open-Pit Coal Mine was studied. The results show that south, northwest, and southwest winds are the main wind directions of the Haerwusu Open-Pit Coal Mine, and the main wind levels are Level 2, Level 3, and Level 4. The interior of the pit is dominated by the direct flow wind area, and the circulation area is concentrated on the bottom-leeward side of the pit. When the wind direction comes from the dump, there is no significant circulation in the stope. When the wind direction is from the end slope, the circulation area is concentrated on the leeward side. With the increase in surface wind speed, the wind speed at the bottom of the stope also increases at a uniform speed, but its amplitude is not large.

Key words: open-pit coal mine, wind flow in stope, numerical simulation, distribution characteristic, ventilation pattern

CLC Number:

X936

ZHANG Yu, ZHAO Meng, WANG Feiyu, WANG Ruixin. Study on distribution characteristics of wind flow in stopes of Haerwusu Open-Pit Coal Mine[J]. China Safety Science Journal, 2025, 35(S1): 130-136.

Figures/Tables 11

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风级	对应风速/(m·s^-1)
0	0~0.2
1	0.3~1.5
2	1.6~3.3
3	3.4~5.4
4	5.5~7.9

平均风速	3	5	7
南风	0.230	0.380	0.540
西北风	0.165	0.285	0.410
西南风	0.176	0.294	0.420

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