Study on numerical simulation of fog dispersal by compressed air jet at shovel loading operation point in Open-pit Mine
XU Xu
YU Haixu
DU Yongzhi
YAN Haifeng
LI Qiang
YU Jingbin
SUN Qiudi
YANG Xiaobin
Abstract：Based on the characteristics of the flow field in the open space of open-pit mine,the fog dispersal technology of flow field of artificial interference operation point is proposed,The formation process of fog,the characteristics of jet disturbance and the interaction between fog and flow field are considered.The formation process of fog,the characteristics of jet disturbance and the interaction between fog and flow field are considered,building a reasonable mathematical model,the characteristics of jet spray flow field are simulated.As a result,the same strong fog gushing time,the fog concentration that the same shovel loading operation point is lower when using pressurized air jet fog dispersal technology.With the continuous outflow of strong dense fog,the influence of pressure air jet on fog concentration increases first and then decreases.The momentum exchange between the fast jet and the fog particles,and the velocity of the fog particles which the pressure air jet passes is large.The jet carries fog particles along the direction of the pressure air jet.In the horizontal direction in front of the electric shovel,fog particles carried by the jet field migrated to both sides of the electric shovel.The air flow rises vertically near the coal wall.Thus the fog field concentration in front of the shovel is obviously reduced and the sight line of the shovel driver is improved.
Keywords：shovel loading operation point in open-pit minecompressed air jetstrong dense fogCFD simulation
Publication Date：2023-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 15-20 )