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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Engineering Research</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Engineering Research</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Инженерные исследования</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-8143</issn><issn publication-format="electronic">2312-8151</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">20600</article-id><article-id pub-id-type="doi">10.22363/2312-8143-2018-19-4-493-502</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Innovative use of mineral resources</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Геология и недропользование</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Characterization of the rock mass of the Boukhadra mine (Algeria)</article-title><trans-title-group xml:lang="ru"><trans-title>Характеристика горных пород рудного месторождения Бухадры в Алжире</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lamamra</surname><given-names>Abdessattar</given-names></name><name xml:lang="ru"><surname>Ламамра</surname><given-names>Абдессаттар</given-names></name></name-alternatives><bio xml:lang="en"><p>postgraduate student of the Department of Geology, Department of Mineral Development and Oil &amp; Gas Engineering</p></bio><bio xml:lang="ru"><p>аспирант департамента недропользования и нефтегазового дела Инженерной академии</p></bio><email>lamamraabdessattar@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kotelnikova</surname><given-names>Elena M</given-names></name><name xml:lang="ru"><surname>Котельникова</surname><given-names>Елена Михайловна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Geological and Mineralogical Sciences, senior lecturer of the Department of Geology, Department of Mineral Development and Oil &amp; Gas Engineering, Engineering Academy</p></bio><bio xml:lang="ru"><p>кандидат геолого-минералогических наук, ассистент департамента недропользования и нефтегазового дела Инженерной академии</p></bio><email>kotelnikova_em@pfur.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sergeev</surname><given-names>Andrey O</given-names></name><name xml:lang="ru"><surname>Сергеев</surname><given-names>Андрей Олегович</given-names></name></name-alternatives><bio xml:lang="en"><p>master student</p></bio><bio xml:lang="ru"><p>магистрант</p></bio><email>sergo7777899@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia (RUDN University)</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Gubkin Russian State University of Oil and Gas (National Research University)</institution></aff><aff><institution xml:lang="ru">Российский государственный университет нефти и газа имени И.М. Губкина</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2018</year></pub-date><volume>19</volume><issue>4</issue><issue-title xml:lang="en">VOL 19, NO4 (2018)</issue-title><issue-title xml:lang="ru">ТОМ 19, №4 (2018)</issue-title><fpage>493</fpage><lpage>502</lpage><history><date date-type="received" iso-8601-date="2019-02-24"><day>24</day><month>02</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Lamamra A., Kotelnikova E.M., Sergeev A.O.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Ламамра А., Котельникова Е.М., Сергеев А.О.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Lamamra A., Kotelnikova E.M., Sergeev A.O.</copyright-holder><copyright-holder xml:lang="ru">Ламамра А., Котельникова Е.М., Сергеев А.О.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/engineering-researches/article/view/20600">https://journals.rudn.ru/engineering-researches/article/view/20600</self-uri><abstract xml:lang="en"><p>Currently, the calculation of the sustainability of the mountain range is one of the main tasks during the design of underground structures at the Bukhadra ore deposit. Each technique involves its own calculation and classification of categories of sustainability. This article presents the results of our research. As a result of laboratory studies, the physical properties of the samples were studied. For each sample, the density, porosity, the degree of saturation of the soil with water, and the degree of cracking of rocks were determined. As a result of the research, it can be concluded that the rocks of the Bukhardra iron mine are very resistant to various factors. A classification developed by the Norwegian Geotechnical Institute to classify mountain ranges and predict further work was used to analyze the rocks of the Bukhadra iron mine. It should be noted that in order to understand the variability of the strength characteristics of the ore, the rock strength index is used. It is a leading indicator of poor quality rock zones. According to the physico-mechanical tests in the laboratories, it was noted that the Bukhadra mine massif has good resistance to compression, tension and shear, this suggests that stability problems in this field are associated with technical factors, such as surface and underground mining.</p></abstract><trans-abstract xml:lang="ru"><p>В настоящее время расчет устойчивости горного массива является одной из основных задач в период проектирования подземных сооружений на рудном месторождении Бухадры. Каждая методика предполагает собственный расчет и классификацию категорий устойчивости. В данной статье представлены результаты лабораторных исследований физических свойств образцов горных пород. Для каждого образца были определены плотность, пористость, степень насыщения грунта водой, степень растрескивания. По результатам проведенных работ можно сделать вывод о том, что горные породы железного рудника Бухарды очень устойчивы к воздействию различных факторов. Для анализа горных пород железного рудника Бухадры с целью классификации горных массивов и прогнозирования дальнейших работ была использована классификация, разработанная Норвежским геотехническим институтом. Следует отметить, что для понимания изменчивости прочностных характеристик руды используется показатель прочности пород. Это ведущий индикатор зон скальных пород низкого качества. Согласно физико-механическим испытаниям в лабораториях, отмечено, что массив рудника Бухадры имеет хорошую устойчивость к сжатию, растяжению и сдвигу. Это говорит о том, что проблемы устойчивости на данном месторождении связаны с техническими факторами, такими как поверхностная и подземная добыча полезных ископаемых.</p></trans-abstract><kwd-group xml:lang="en"><kwd>determination of rock properties</kwd><kwd>physical and mechanical properties</kwd><kwd>rock massif</kwd><kwd>mechanical tests</kwd><kwd>Buhadra</kwd><kwd>mine workings</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>определение свойств горной породы</kwd><kwd>физико-механические свойства</kwd><kwd>скальный массив</kwd><kwd>механические испытания</kwd><kwd>Бухадра</kwd><kwd>горная выработка</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Boukhadra Mine. Geological study of the region of Boukhadra and L’Ouenza 2014. (In French)</mixed-citation><mixed-citation xml:lang="ru">Mine de Boukhadra. 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