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© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

As the world’s largest open-pit coal producer, China faces severe dust pollution in mining operations. Cabins of mining equipment (electric shovels, haul trucks, drills) exhibit unique micro-environmental contamination due to dual-source pollution (external infiltration and internal secondary dust generation), posing severe health risks to miners. This study focused on electric shovel cabins at the Heidaigou open-pit coal mine to address cabin dust pollution. Through analysis of dust physicochemical properties, a pollution characteristic database was established. Field measurements and statistical methods revealed temporal–spatial variation patterns of dust concentrations, quantifying occupational exposure risks and providing theoretical foundations for dust control. A novel gradient-pressurized air purification system was developed for harsh mining conditions. Key findings include the following. (1) Both coal-shovel and rock-shovel operators were exposed to Level I (mild hazard level), with rock-shovel operators approaching Level II (moderate hazard level). (2) The system reduced respirable dust concentrations from 0.313 mg/m3 to 0.208 mg/m3 (≥33.34% improvement) in coal-shovel cabins and from 0.625 mg/m3 to 0.421 mg/m3 (≥32.64% improvement) in rock-shovel cabins. These findings offer vital guidance for optimizing cabin design, improving dust control, and developing scientific management strategies, thereby effectively protecting miners’ health and ensuring operational safety.

Details

Title
Study on Dust Hazard Levels and Dust Suppression Technologies in Cabins of Typical Mining Equipment in Large Open-Pit Coal Mines in China
Author
Jiao Xiaoliang 1 ; Zhou, Wei 2 ; Zhu Junpeng 3 ; Zhao Xinlu 3 ; Yan Junlong 4 ; Wang, Ruixin 4 ; Li, Yaning 4 ; Lu, Xiang 2   VIAFID ORCID Logo 

 CHN Energy Jungar Energy Group Co., Ltd., Ordos 010300, China; [email protected] 
 School of Mines, China University of Mining and Technology, Xuzhou 221116, China; [email protected] (W.Z.); [email protected] (J.Y.); [email protected] (R.W.); [email protected] (Y.L.), State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China, High-Tech Research Center for Open Pit Mines, China University of Mining and Technology, Xuzhou 221116, China 
 Heidaigou Open-Pit Coal Mine, CHN Energy Zhunneng Group Co., Ltd., Ordos 010300, China; [email protected] (J.Z.); [email protected] (X.Z.) 
 School of Mines, China University of Mining and Technology, Xuzhou 221116, China; [email protected] (W.Z.); [email protected] (J.Y.); [email protected] (R.W.); [email protected] (Y.L.) 
First page
461
Publication year
2025
Publication date
2025
Publisher
MDPI AG
e-ISSN
20734433
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3194491904
Copyright
© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.