Spatiotemporal migration of dust pollution during the tunnel mucking process and development of dust removal trolley based on computational fluid dynamics technology.

IF 2.2 4区 医学 Q3 ENVIRONMENTAL SCIENCES International Journal of Environmental Health Research Pub Date : 2024-12-02 DOI:10.1080/09603123.2024.2435489
Yixuan Wei, Haoran Guo, Yifei Xu, Shu Wang, Jianguo Liu, Zhiqian Peng, Longzhe Jin, Shengnan Ou
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引用次数: 0

Abstract

During tunnel construction, the protracted mucking phase poses significant occupational health risks, particularly from dust exposure. This study delves into comprehensive numerical simulations to examine the spatiotemporal dynamics of dust particles during the mucking process. A distinct 'bimodal pattern' was characterized by higher concentrations in the mucking area (0-30 m) and the inverted arch area (60-110 m), where concentrations exceed 30 mg/m3 under all conditions. To address this issue, a novel dust removal system has been developed. Integrating six dust collectors and one air curtain device, a dust removal trolley is strategically positioned at z = 70 m to locally purify the air. The extracted wind speed of the dust collectors (Vinlet1) and the air curtain's wind speed (Vinlet2) are optimized based on ventilation conditions and dust dispersion characteristics. This system effectively reduces dust mass concentrations to below 4.8 mg/m3 at six worker locations.

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来源期刊
International Journal of Environmental Health Research
International Journal of Environmental Health Research 医学-公共卫生、环境卫生与职业卫生
CiteScore
6.70
自引率
3.10%
发文量
134
审稿时长
>12 weeks
期刊介绍: International Journal of Environmental Health Research ( IJEHR ) is devoted to the rapid publication of research in environmental health, acting as a link between the diverse research communities and practitioners in environmental health. Published articles encompass original research papers, technical notes and review articles. IJEHR publishes articles on all aspects of the interaction between the environment and human health. This interaction can broadly be divided into three areas: the natural environment and health – health implications and monitoring of air, water and soil pollutants and pollution and health improvements and air, water and soil quality standards; the built environment and health – occupational health and safety, exposure limits, monitoring and control of pollutants in the workplace, and standards of health; and communicable diseases – disease spread, control and prevention, food hygiene and control, and health aspects of rodents and insects. IJEHR is published in association with the International Federation of Environmental Health and includes news from the Federation of international meetings, courses and environmental health issues.
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