Research on dust control mechanism of fully-mechanized mining face based on a new air distribution dust control method
HAN Wenjie
ZHANG Hu
SHI Lei
QIN Na
Abstract：In order to improve the problem of serious dust pollution in the fully-mechanized mining face,a new air distribution dust control method with air separator installed was proposed for the fully-mechanized mining face of Daliuta Coal Mine in Yulin,Shaanxi Province.Fluent was used to simulate the dust diffusion rule of the new-type air distribution dust control method,and the in-fluences of different distances between the air pressure outlet and the working face and different pressure-pumping ratios on the change of dust diffusion rule were analyzed.When the air pressure outlet is 10-20 m away from the working face,dust accumulates and settles in the bottom of the roadway in the working face area,and the dust concentration is low at the driver's side,and the dust control effect is better.When the distance between the air pressure outlet and the working face is 10 m and the pressure-pumping ra-tio is 1.0,the high concentration of dust accumulates in the working face area,and the dust concentration at the driver is controlled below 50 mg/m3,and the dust control effect is better.Through field measurement,the error between dust concentration and simula-tion results is less than 15.2%.
Keywords：dust pollutionfully-mechanized mining faceair separatorpressure-pumping ratiodust control mechanism
Publication Date：2024-07-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 59-67 )