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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gscience</journal-id><journal-title-group><journal-title xml:lang="en">Mining Science and Technology (Russia)</journal-title><trans-title-group xml:lang="ru"><trans-title>Горные науки и технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-0632</issn><publisher><publisher-name>The National University of Science and Technology MISiIS (NUST MISIS)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/2500-0632-2022-09-22</article-id><article-id custom-type="elpub" pub-id-type="custom">gscience-395</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MINERAL RESOURCES EXPLOITATION</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>РАЗРАБОТКА МЕСТОРОЖДЕНИЙ ПОЛЕЗНЫХ ИСКОПАЕМЫХ</subject></subj-group></article-categories><title-group><article-title>Measurement of feeder performance during coal discharge from an underroof seam using machine vision</article-title><trans-title-group xml:lang="ru"><trans-title>Измерение производительности питателя при выпуске угля из подкровельной толщи на основе технологии машинного зрения</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8752-1332</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никитенко</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitenko</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Сергеевич Никитенко – кандидат технических наук, заведующий лабораторией</p><p>Scopus ID 55748886500</p><p>ResearcherID E-3893-2014</p><p>г. Кемерово</p></bio><bio xml:lang="en"><p>Mikhail S. Nikitenko – Cand. Sci. (Eng.), Head of Laboratory</p><p>Scopus ID 55748886500</p><p>ResearcherID E-3893-2014</p><p>Kemerovo</p></bio><email xlink:type="simple">ltd.mseng@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2554-1383</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кизилов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kizilov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Александрович Кизилов – научный сотрудник</p><p>Scopus ID 57203142801</p><p>г. Кемерово</p></bio><bio xml:lang="en"><p>Sergey A. Kizilov – Researcher</p><p>Scopus ID 57203142801</p><p>Kemerovo</p></bio><email xlink:type="simple">sergkizilov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Захаров</surname><given-names>Ю. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharov</surname><given-names>Yu. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Николаевич Захаров – доктор физико-математических наук, профессор</p><p>Scopus ID 56825350700</p><p>г. Кемерово</p></bio><bio xml:lang="en"><p>Yuri N. Zakharov – Dr. Sci. (Phys. and Math.), Professor</p><p>Scopus ID 56825350700</p><p>Kemerovo</p></bio><email xlink:type="simple">zaxarovyn@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Худоногов</surname><given-names>Д. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Khudonogov</surname><given-names>D. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Данила Юрьевич Худоногов – научный сотрудник</p><p>г. Кемерово</p></bio><bio xml:lang="en"><p>Danila Yu. Khudonogov – Researcher</p><p>Kemerovo</p></bio><email xlink:type="simple">admolv@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8061-8684</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Игнатова</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ignatova</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алла Юрьевна Игнатова – кандидат биологических наук, доцент кафедры химической технологии твердого топлива и экологии</p><p>Scopus ID 6701747560</p><p>г. Кемерово</p></bio><bio xml:lang="en"><p>Alla Yu. Ignatova – Cand. Sci. (Biol.), Associate Professor of the Department of Chemical Technology of Solid Fuels and Ecology</p><p>Scopus ID 6701747560</p><p>Kemerovo</p></bio><email xlink:type="simple">allaignatova@rambler.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральный исследовательский центр угля и углехимии Сибирского отделения Российской академии наук (ФИЦ УУХ СО РАН)<country>Россия</country></aff><aff xml:lang="en">Federal Research Centre of Coal and Coal Chemistry of the Siberian Branch of the Russian Academy of Sciences (FRC CCC SB RAS)<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Кемеровский государственный университет (КемГУ)<country>Россия</country></aff><aff xml:lang="en">Kemerovo State University (KemSU)<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Кузбасский государственный технический университет имени Т.Ф. Горбачева<country>Россия</country></aff><aff xml:lang="en">Kuzbass State Technical University named after T.F. Gorbachev<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>26</day><month>12</month><year>2022</year></pub-date><volume>7</volume><issue>4</issue><elocation-id>264–273</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Nikitenko M.S., Kizilov S.A., Zakharov Y.N., Khudonogov D.Y., Ignatova A.Y., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Никитенко М.С., Кизилов С.А., Захаров Ю.Н., Худоногов Д.Ю., Игнатова А.Ю.</copyright-holder><copyright-holder xml:lang="en">Nikitenko M.S., Kizilov S.A., Zakharov Y.N., Khudonogov D.Y., Ignatova A.Y.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://mst.misis.ru/jour/article/view/395">https://mst.misis.ru/jour/article/view/395</self-uri><abstract><p>The technology for extracting and discharging coal from an underroof seam uses the so-called gravitational extraction method in which coal is extracted and discharged from under the roof by gravity. Here, coal can be discharged onto the main conveyor (face conveyor, located in the supported area), central conveyor (rear conveyor in Western literature), and tail conveyor (discharge conveyor, located in the unsupported area). The most common facilities used currently are longwall sets of equipment providing discharge onto tail conveyors. The purpose of this study is to measure the performance of a motorised plate feeder supplying coal from the outlet port of a roof support to a conveyor during the extraction of thick seams with discharge onto the face conveyor. To achieve the goal, it is proposed to measure the coal volume using machine vision. Methods for calculating a unit volume in a measuring section using a three-dimensional model were investigated. Laboratory studies were carried out to estimate the relative errors of the methods. The research allowed properly defining: a method for collecting data to calculate the unit volume of coal; a method for calculating the unit volume in the measuring section; a method for calculating the feeder performance using machine vision, and approaches for physically simplifying the video scene examined by machine vision. A relative error of less than 10 % with the existing measurement accuracy for constructing a coal layer surface height map indicates the sufficiency of the proposed calculation method for engineering use. The developed mathematical apparatus for calculating the unit volume of coal at the measuring section and measuring the feeder performance allows creating algorithmic software using the elementary mathematical functions of addition, subtraction, multiplication, and division. This aspect is important because it lower sights for the software development environment, and therefore expands the range of hardware suitable for calculating the feeder performance.</p></abstract><trans-abstract xml:lang="ru"><p>Технология выпуска угля из подкровельной пачки использует так называемый гравитационный выпуск, когда уголь выпускается из-под кровли «самотеком» под действием силы тяжести. Выпуск при этом можно производить на главный конвейер (забойный – расположенный в закрепленном пространстве), центральный (в западной литературе – задний) и хвостовой (завальный – расположенный в незакрепленном пространстве). Наиболее распространенными на данный момент времени являются комплексы с выпуском на завальный конвейер. Целью исследования является измерение производительности механизированного пластинчатого питателя, подающего уголь от выпускного окна крепи на конвейер в технологии отработки мощных пластов с выпуском на забойный конвейер. Для достижения цели предлагается осуществлять измерение объема с применением технологии машинного зрения. Исследованы способы расчета единичного объема на измерительном участке на трехмерной модели. Проведены лабораторные исследования, в рамках которых оценены относительные погрешности.Исследования позволили формализовать: способ сбора данных для расчета единичного объема угля; методику расчета единичного объема на измерительном участке; способ расчета производительно- сти питателя на основе системы машинного зрения, а также подходы для физического упрощения сцены, исследуемой машинным зрением. Относительная погрешность менее 10 % при имеющейся точности измерений для построения карты высот говорит о достаточности для инженерного использования предложенного способа расчета. Разработанный математический аппарат для расчетов единичного объема угля на измерительном участке и измерения производительности питателя позволяют создавать алгоритмическое обеспечение с использованием элементарных математических функций: сложение, вычитание, умножение и деление. Данный аспект важен, так как снижает планку требований к среде разработки программного обеспечения, а соответственно, расширяет номенклатуру аппаратных средств, пригодных для выполнения задач расчета производительности питателя.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>горное дело</kwd><kwd>добыча угля</kwd><kwd>лавный комплекс</kwd><kwd>производительность</kwd><kwd>выпуск угля</kwd><kwd>забойный конвейер</kwd><kwd>объем горной массы</kwd><kwd>машинное зрение</kwd><kwd>распознавание образов</kwd><kwd>распознавание видеоизображений</kwd><kwd>карта высот</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mining</kwd><kwd>coal mining</kwd><kwd>coalface</kwd><kwd>performance</kwd><kwd>coal discharge</kwd><kwd>face conveyor</kwd><kwd>rock mass volume</kwd><kwd>machine vision</kwd><kwd>pattern recognition</kwd><kwd>video image recognition</kwd><kwd>height map</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена в рамках государственного задания ФГБНУ «Федеральный исследовательский центр угля и углехимии Сибирского отделения Российской академии наук» проект FWEZ-2021-0017 «Разработка научных основ создания автономных и автоматизированных горных машин, оборудования, технических и управляющих систем на базе перспективных цифровых и роботизированных технологий» (рег. №121121000036-1) и грантов Минобрнауки России (Соглашения №075-15-2022-1199 и №075-15-2022-1190).</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>This work was carried out within the framework of the government assignment for the Federal State Scientific Research Centre of Coal and Coal Chemistry, Siberian Branch of Russian Academy of Sciences on the Project FWEZ-2021-0017 – “Development of Scientific Foundations for the Creation of Autonomous and Automated Mining Machinery, Equipment, and Technical and Control Systems Based on Advanced Digital and Robotic Technologies” (Reg. No. 121121000036-1) and grants of the Ministry of Education and Science of Russia (Agreement No. 075-15-2022-1199 and Agreement No. 075-15-2022-1190).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Клишин В. И., Анферов Б. А., Кузнецова Л. В. Направления совершенствования разработки мощных пластов с выпуском угля подкровельной толщи. В: Инновации в топливно-энергетическом комплексе и машиностроении (ТЭК-2017). Сборник трудов Международной научно-практической конференции. Кемерово: Кузбасский государственный технический университет имени Т.Ф. Горбачева; 2017. С. 57–63.</mixed-citation><mixed-citation xml:lang="en">Klishin V. I., Afyorov B. A., Kuznetsova L. V. Areas of improving development of thick seams with drawing of the coal from under the roof strata. In: Innovations in Fuel and Energy Complex and Mechanical Engineering (FEC-2017). 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