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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.31897/PMI.2022.87</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-15905</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15905</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Металлургия и обогащение</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Metallurgy and concentration</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Evaluation of deformation characteristics of brittle rocks  beyond the limit of strength in the mode of uniaxial  servohydraulic loading</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Оценка деформационных характеристик хрупких горных пород  за пределом прочности в режиме одноосного  сервогидравлического нагружения</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Gospodarikov</surname>
            <given-names>Alexander P.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Господариков</surname>
              <given-names>А. П.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Gospodarikov</surname>
              <given-names>Alexander P.</given-names>
            </name>
          </name-alternatives>
          <email>kafmatem@spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-1018-6841</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Saint Petersburg Mining University (Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Trofimov</surname>
            <given-names>Andrey V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Трофимов</surname>
              <given-names>А. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Trofimov</surname>
              <given-names>Andrey V.</given-names>
            </name>
          </name-alternatives>
          <email>TrofimovAV@nornik.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-7557-9801</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">ООО «Институт Гипроникель» (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">OOO Gipronikel Institute (Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Kirkin</surname>
            <given-names>Alexander P.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Киркин</surname>
              <given-names>А. П.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kirkin</surname>
              <given-names>Alexander P.</given-names>
            </name>
          </name-alternatives>
          <email>s195056@stud.spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-4830-8042</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Saint Petersburg Mining University (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2022-11-03">
        <day>03</day>
        <month>11</month>
        <year>2022</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2022</year>
      </pub-date>
      <volume>256</volume>
      <fpage>539</fpage>
      <lpage>548</lpage>
      <history>
        <date date-type="received" iso-8601-date="2022-06-20">
          <day>20</day>
          <month>06</month>
          <year>2022</year>
        </date>
        <date date-type="accepted" iso-8601-date="2022-10-07">
          <day>07</day>
          <month>10</month>
          <year>2022</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2022-11-03">
          <day>03</day>
          <month>11</month>
          <year>2022</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2022 А. П. Господариков, А. В. Трофимов, А. П. Киркин</copyright-statement>
        <copyright-statement xml:lang="en">© 2022 Alexander P. Gospodarikov, Andrey V. Trofimov, Alexander P. Kirkin</copyright-statement>
        <copyright-year>2022</copyright-year>
        <copyright-holder xml:lang="ru">А. П. Господариков, А. В. Трофимов, А. П. Киркин</copyright-holder>
        <copyright-holder xml:lang="en">Alexander P. Gospodarikov, Andrey V. Trofimov, Alexander P. Kirkin</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/15905">https://pmi.spmi.ru/pmi/article/view/15905</self-uri>
      <abstract xml:lang="ru">
        <p>Одним из самых надежных методов оценки физико-механических свойств горных пород в результате их разрушения являются лабораторные испытания с применением жестких или сервоприводных испытательных прессов. Они позволяют получить достоверную информацию об изменении этих свойств за пределом прочности на сжатие. Представлены результаты проведенных лабораторных испытаний образцов богатой сульфидной руды, позволившие получить графики их запредельного деформирования. Испытаны как монолитные образцы, так и образцы с концентраторами напряжений в виде отверстий круглого сечения диаметром 3, 5 и 10 мм. Выявлено, что в процессе разрушения образцов модули упругости и деформации уменьшаются в 1,5-2 раза, а в зоне остаточной прочности – в 5-7 раз.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>One of the most reliable methods for assessing the physical and mechanical properties of rocks as a result of their destruction are laboratory tests using hard or servo-driven test presses. They allow to obtain reliable information about changes in these properties beyond the limit of compressive strength. The results of laboratory tests of rich sulfide ore samples are presented, which made it possible to obtain graphs of their extreme deformation. Both monolithic samples and samples with stress concentrators in the form of circular holes with a diameter of 3, 5 and 10 mm were tested. It was revealed that during the destruction of the samples, the modules of elasticity and deformation decrease by 1.5-2 times, and in the zone of residual strength – by 5-7 times.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>физико-механические свойства</kwd>
        <kwd>лабораторные испытания</kwd>
        <kwd>запредельное деформирование</kwd>
        <kwd>сервогидравлические испытательные прессы</kwd>
        <kwd>поперечные деформации</kwd>
        <kwd>модуль упругости</kwd>
        <kwd>модуль деформации</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>physical and mechanical properties</kwd>
        <kwd>laboratory tests</kwd>
        <kwd>extreme deformation</kwd>
        <kwd>servohydraulic test presses</kwd>
        <kwd>lateral deformations</kwd>
        <kwd>modulus of elasticity</kwd>
        <kwd>modulus of deformation</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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