Mapping coal fires using Normalized Difference Coal Fire Index (NDCFI): case study at Khanh Hoa coal mine, Vietnam
https://doi.org/10.17073/2500-0632-2021-4-233-240
Abstract
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.
About the Authors
L. H. Trinh
Le Quy Don Technical University
Viet Nam
Viet Nam
Le Hung Trinh – Lecturer
Scopus ID 57035066200
Hanoi
V. N. Nguyen
Hanoi University of Mining and Geology
Viet Nam
Viet Nam
Viet Nghia Nguyen – Lecturer, Department of Mine Surveying
Scopus ID 57204141788
Hanoi
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Review
For citations:
Trinh L.H., Nguyen V.N. Mapping coal fires using Normalized Difference Coal Fire Index (NDCFI): case study at Khanh Hoa coal mine, Vietnam. Mining Science and Technology (Russia). 2021;6(4):233-240. https://doi.org/10.17073/2500-0632-2021-4-233-240
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