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    <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 custom-type="edn" pub-id-type="custom">UIKLCW</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16276</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16276</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геотехнология и инженерная геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geotechnical Engineering and Engineering Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Study of the pore structure in granite and gabbrodolerite crushed stone grains of various sizes</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Исследование строения порового пространства зерен щебня из гранита и габбродолерита различной крупности</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Kameneva</surname>
            <given-names>Elena E.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Каменева</surname>
              <given-names>Е. Е.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kameneva</surname>
              <given-names>Elena E.</given-names>
            </name>
          </name-alternatives>
          <email>Elena.kameneva@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-6767-1536</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Петрозаводский государственный университет (Петрозаводск, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Petrozavodsk State University (Petrozavodsk, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Nikiforova</surname>
            <given-names>Viktoriya S.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Никифорова</surname>
              <given-names>В. С.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Nikiforova</surname>
              <given-names>Viktoriya S.</given-names>
            </name>
          </name-alternatives>
          <email>Nikiforova_VS@pers.spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-1278-5290</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины II (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Empress Catherine ΙΙ Saint Petersburg Mining University (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2024-10-02">
        <day>02</day>
        <month>10</month>
        <year>2024</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2025</year>
      </pub-date>
      <volume>271</volume>
      <fpage>74</fpage>
      <lpage>83</lpage>
      <history>
        <date date-type="received" iso-8601-date="2023-07-04">
          <day>04</day>
          <month>07</month>
          <year>2023</year>
        </date>
        <date date-type="accepted" iso-8601-date="2024-05-02">
          <day>02</day>
          <month>05</month>
          <year>2024</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2025-02-25">
          <day>25</day>
          <month>02</month>
          <year>2025</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2024 Е. Е. Каменева, В. С. Никифорова</copyright-statement>
        <copyright-statement xml:lang="en">© 2024 Elena E. Kameneva, Viktoriya S. Nikiforova</copyright-statement>
        <copyright-year>2024</copyright-year>
        <copyright-holder xml:lang="ru">Е. Е. Каменева, В. С. Никифорова</copyright-holder>
        <copyright-holder xml:lang="en">Elena E. Kameneva, Viktoriya S. Nikiforova</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/16276">https://pmi.spmi.ru/pmi/article/view/16276</self-uri>
      <abstract xml:lang="ru">
        <p>Приведены результаты исследования строения порового пространства различных по крупности зерен щебня, полученного в результате стадиальной дезинтеграции габбродолерита и микроклинового гранита – пород, различающихся по текстуре, структуре и минеральному составу. Исследования, проведенные с применением метода рентгеновской компьютерной микротомографии, показали, что при дезинтеграции происходит изменение строения порового пространства пород. Увеличение общей пористости и концентрации пор в зернах щебня связано с появлением новообразованных пор различных размеров и сферичности. Однозначная зависимость пористости зерен щебня от их крупности отсутствует. Это связано с текстурно-структурными особенностями и минеральным составом исходных горных пород. Влияние масштабного фактора проявляется только для габбродолерита, характеризующегося мелкозернистой структурой, массивной текстурой и стабильным минеральным составом. Мелкие зерна габбродолерита имеют более низкую концентрацию пор по сравнению с крупными, что согласуется со статистической теорией прочности горных пород, согласно которой вероятность дефектов (пор и микротрещин) снижается по мере уменьшения размеров образцов – чем меньше размер зерен, тем выше их прочность. Для неравномернозернистых гранитов порфировидной текстуры тенденция обратная – мелкие зерна являются более пористыми. Исследование пористости отдельных породообразующих минералов гранита показало, что в зернах щебня из гранита поры распределены неравномерно. Наиболее высокая концентрация пор характерна для микроклина. Присутствие в зернах гранитного щебня хрупких и пористых выделений микроклина приводит к появлению новообразованных пор и микротрещин, число которых увеличивается при многократном приложении нагрузки при стадиальной дезинтеграции.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The results of a study on the pore structure of crushed stone grains of various sizes, obtained through staged disintegration of gabbrodolerite and microcline granite – rocks differing in texture, structure, and mineral composition – are presented. Research conducted using X-ray computed microtomography revealed that disintegration leads to changes in the pore structure of the rocks. The increase in overall porosity and pore concentration in the crushed stone grains is associated with the formation of newly developed pores of various sizes and sphericity. A clear relationship between the porosity of the crushed stone grains and their size is absent, which is due to the textural and structural characteristics as well as the mineral composition of the original rocks. The scale factor is evident only in the case of gabbrodolerite, which is characterized by a fine-grained structure, massive texture, and stable mineral composition. Fine gabbrodolerite grains exhibit lower pore concentration compared to larger grains, which aligns with the statistical theory of rock strength, according to which the probability of defects (pores and microcracks) decreases as the sample size diminishes – the smaller the grain size, the higher its strength. In contrast, for porphyritic granites with an uneven grain size, the trend is reversed – smaller grains are more porous. A study of the porosity of individual rock-forming minerals in granite showed that pores are unevenly distributed in the granite crushed stone grains. The highest concentration of pores is typical for microcline. The presence of brittle and porous microcline inclusions in the granite crushed stone grains leads to the formation of new pores and microcracks, whose number increases with the repeated application of load during staged disintegration.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>гранит</kwd>
        <kwd>габбродолерит</kwd>
        <kwd>масштабный фактор</kwd>
        <kwd>строение порового пространства</kwd>
        <kwd>рентгеновская компьютерная микротомография</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>granite</kwd>
        <kwd>gabbrodolerite</kwd>
        <kwd>scale factor</kwd>
        <kwd>pore structure</kwd>
        <kwd>X-ray computed microtomography</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
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