gscienceMining Science and Technology (Russia)Горные науки и технологии2500-0632The National University of Science and Technology MISiIS (NUST MISIS)10.17073/2500-0632-2021-4-233-240gscience-304Research ArticleSAFETY IN MINING AND PROCESSING INDUSTRY AND ENVIRONMENTAL PROTECTIONТЕХНОЛОГИЧЕСКАЯ БЕЗОПАСНОСТЬ В МИНЕРАЛЬНО-СЫРЬЕВОМ КОМПЛЕКСЕ И ОХРАНА ОКРУЖАЮЩЕЙ СРЕДЫMapping coal fires using Normalized Difference Coal Fire Index (NDCFI): case study at Khanh Hoa coal mine, VietnamВыявление пожаров на угольных рудниках с использованием стандартизированного относительного индекса горения угля на примере угольного рудника Кханьхоа, Вьетнамhttps://orcid.org/0000-0002-2403-063XЧиньЛ. Х.TrinhL. H.

Ле Хунг Чинь – преподаватель

Scopus ID 57035066200

г. Ханой

Le Hung Trinh – Lecturer

Scopus ID 57035066200

Hanoi

trinhlehung@lqdtu.edu.vnhttps://orcid.org/0000-0001-7010-8613НгуенВ. Н.NguyenV. N.

Вьет Нгиа Нгуен – преподаватель, кафедра маркшейдерского дела

Scopus ID 57204141788

г. Ханой

Viet Nghia Nguyen – Lecturer, Department of Mine Surveying

Scopus ID 57204141788

Hanoi

nguyenvietnghia@humg.edu.vnТехнический университет им. Ле Куи ДонВьетнамLe Quy Don Technical UniversityViet NamХанойский горно-геологический университетВьетнамHanoi University of Mining and GeologyViet Nam20212612202164233240Copyright © Trinh L.H., Nguyen V.N., 20212021Чинь Л.Х., Нгуен В.Н.Trinh L.H., Nguyen V.N.This work is licensed under a Creative Commons Attribution 4.0 License.https://mst.misis.ru/jour/article/view/304

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.

Угольный рудник Кханьхоа (провинция Тхай Нгуен) – один из крупнейших угольных рудников на севере Вьетнама. В течение многих лет в этом районе происходили подземные пожары в отвалах рудника, что оказывало заметное негативное воздействие на производственную деятельность и окружающую среду. В данной статье представлены результаты классификации участков подземных пожаров на угольном руднике Кханьхоа с использованием стандартизированного относительного индекса горения угля (NDCFI). Космоснимки, сделанные спутником 03 Landsat 8 OLI_TIRS (с использованием инфракрасного сканера) 2 декабря 2013 года, 10 декабря 2016 года и 3 декабря 2019 года, были использованы для расчета индекса NDCFI, а затем классификации участков подземных пожаров методом пороговой фильтрации. В ходе исследования также рассчитывалась температура поверхности земли по данным измерений спутника Landsat 8 в тепловом инфракрасном диапазоне, а затем сравнивалась с результатами классификации подземных угольных пожаров на угольном руднике Кханьхоа. Полученные результаты показали, что индекс NDCFI может быть эффективно использован для обнаружения и мониторинга участков/очагов подземных пожаров на угольных рудниках. Использование индекса NDCFI также имеет много преимуществ благодаря простоте и быстроте расчетов по сравнению с другими методами классификации участков/очагов подземных угольных пожаров.

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The authors declare that there are no conflicts of interest present.