Numerical study on temporal and spatial distribution of particulate matter under multi-vehicle working conditions

Liu, Cheng-Yi; Nie, Wen; Luo, Cuicui; Hua, Yun; Niu, Wenjin; Zhang, Xu; Zhang, Shaobo; Xue, Qianqian; Sun, Ning; Jiang, Chenwang

doi:10.1016/j.scitotenv.2022.160710

Cited by 28 publications

(1 citation statement)

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“…The underground working environment is limited and complex for coal workers. One of the important issue is coal dust during the coal mining process (Liu et al, 2022). During the excavation of coal seams in underground mines, sandstones, slates and shales are frequently encountered around the coal seams of the local geologic strata.…”

Section: Introductionmentioning

confidence: 99%

Suspension characteristics of the coal-quartz dust mixture in the working environment during the fully mechanized mining process

Geng,

An,

Wang

et al. 2023

Environ Sci Pollut Res

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Dust exposures during mining activity can result in lung diseases such as Coal workers' pneumoconiosis (CWP) and silicosis, which are closely related to quartz dust. In the present study, coal-quartz dust mixture were investigated considering the particle size and the specific constituents. Multiple numerical techniques, including Computational Fluid Dynamics and Discrete Element Method (CFD-DEM), hard sphere model and direct monte carlo simulation (DSMC) were presented, and the dust diffusion process was investigated. According to the validation of the numerical model, the suspension characteristics of the polydisperse mixed dust were analyzed in detail. The results show that PM10 responds quickly with good following performance with the air flow. The particle size increases gradually from top to bottom.When the air velocity is low, the percentage of coal dust in the breathing zone tends to be 50%. The results provide theoretical guidance for the comprehensive prevention of the mixed dust in underground coal mines.

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Section: Introductionmentioning

confidence: 99%