Abstract
Coal spontaneous combustion is a common problem faced by many coal mines. Spontaneous combustion in goaf releases a large amount of harmful gases, polluting the environment while causing a large amount of wasted resources, and even endangering the lives of workers. Due to the collapse of the interior of the mining area, it is impossible to measure the internal gas composition directly. In order to more accurately predict the spontaneous combustion state inside the mining airspace, this paper obtains the CO generation law and the main source of the working face through the combination of laboratory experiments and on-site monitoring. The CO concentration prediction model of the return corner is established with CO as the index gas. Finally, the safe concentration and warning concentration of the working face are calculated according to the example, which provides theoretical basis for the prediction of spontaneous combustion of coal.
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The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by the National Natural Science Foundation of China [52004293] and the Fundamental Research Funds for the Central Universities [FRF-TP-20-034A1].
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All authors contributed to the study conception and design. Chengxi Wang: methodology, investigation, writing—original draft preparation. Po Hu: conceptualization, data curation, visualization, writing—review and editing. Yingfeng Sun: resources, supervision, project administration, funding acquisition. Chunran Yang: resources, writing—review and editing.
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Wang, C., Hu, P., Sun, Y. et al. Study on CO source identification and spontaneous combustion warning concentration in the return corner of working face in shallow buried coal seam. Environ Sci Pollut Res 31, 15050–15064 (2024). https://doi.org/10.1007/s11356-024-32119-1
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DOI: https://doi.org/10.1007/s11356-024-32119-1