Simulation and analysis of dust transport pattern in the open pit of Antaibu mine
The purpose of this paper is to take Antaibao open-pit mine as the research object,use Global Map-per to extract the contours of this area,and use modeling software to build a three-dimensional model of the mine,and then use the method of numerical simulation to deeply analyze the characteristics of dust transport in the pit,including wind speed,wind pressure and dust transport trajectories of different particle sizes,in order to control the dust concentration.The results show that the wind direction affects the horizontal migration and dif-fusion direction of dust,resulting in high dust concentration on the downwind side;under the condition of basic wind direction and wind speed in Antaibao open-pit mine,the diffusion path of small dust is farther from the dust source point;when the westerly wind is blown,the wind speed at the bottom of the mine tends to be the minimum 0 m/s,and at the same speed,the northwest wind is more favorable for dust diffusion than the west wind.The slope pressure changes significantly,and the pressure is higher at the outlet side and step boundary,and the horizontal pressure of the slope increases gradually with the increase of pit depth.
open-pit minedust production mechanismdiffusion lawnumerical simulation
NETL
NSTL
万方数据
