Mapping coal fires using normalized difference coal fire index (NDCFI): case study at Khanh Hoa coal mine, Vietnam

Mapping coal fires using normalized difference coal fire index (NDCFI): case study at Khanh Hoa coal mine, Vietnam

Автор: Trinh Le Hung, Nguyen Viet Nghia

Журнал: Горные науки и технологии @gornye-nauki-tekhnologii

Рубрика: Технологическая безопасность в минерально-сырьевом комплексе и охрана окружающей среды

Статья в выпуске: 4 т.6, 2021 года.

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Khanh Hoa coal mine (Thai Nguyen province) is one of the largest coal mines in the north of Vietnam. For many years, this area suffered from underground fires at coal mine waste dumps, seriously affecting production activities and the environment. This paper presents the results of classification of underground fire areas at Khanh Hoa coal mine using Normalized Diference Coal Fire Index (NDCFI). 03 Landsat 8 OLI_TIRS images taken on December 2, 2013, December 10, 2016, and December 3, 2019 were used to calculate NDCFI index, and then classify the underground fire areas by thresholding method. In the study, the land surface temperature was also calculated from Landsat 8 thermal infrared bands data, and then compared with the results of underground coal fire classification at Khanh Hoa coal mine. The obtained results showed that the NDCFI index can be used effectively in detecting and monitoring underground fire areas at coal mines. The use of the NDCFI index also has many advantages due to its calculation simplicity and rapidness compared to other methods for classifying underground coal fire areas.

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Coal fire, khanh hoa coal mine, landsat data, ndcfi index, remote sensing

Короткий адрес: https://sciup.org/140290236

IDR: 140290236   |   DOI: 10.17073/2500-0632-2021-4-233-240

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