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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.2021.1.1</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-13743</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/13743</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Горное дело</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Mining</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Experimental study of thermomechanical effects in water-saturated limestones during their deformation</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Экспериментальное исследование термомеханических эффектов  в водонасыщенных известняках при их деформировании</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Blokhin</surname>
            <given-names>Dmitry I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Блохин</surname>
              <given-names>Д. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Blokhin</surname>
              <given-names>Dmitry I.</given-names>
            </name>
          </name-alternatives>
          <email>dblokhin@yandex.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-4652-661X</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Институт проблем комплексного освоения недр РАН (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Ivanov</surname>
            <given-names>Pavel N.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Иванов</surname>
              <given-names>П. Н.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Ivanov</surname>
              <given-names>Pavel N.</given-names>
            </name>
          </name-alternatives>
          <email>pavelnivanov@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-6958-5164</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Национальный Исследовательский Технологический Университет "МИСиС" (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">National University of Science and Technology MISiS (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Dudchenko</surname>
            <given-names>Oleg L.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Дудченко</surname>
              <given-names>О. Л.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Dudchenko</surname>
              <given-names>Oleg L.</given-names>
            </name>
          </name-alternatives>
          <email>dionis_4444@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-9040-4433</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Национальный Исследовательский Технологический Университет "МИСиС" (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">National University of Science and Technology MISiS (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2021-04-26">
        <day>26</day>
        <month>04</month>
        <year>2021</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2021</year>
      </pub-date>
      <volume>247</volume>
      <fpage>1</fpage>
      <lpage>10</lpage>
      <history>
        <date date-type="received" iso-8601-date="2020-07-30">
          <day>30</day>
          <month>07</month>
          <year>2020</year>
        </date>
        <date date-type="accepted" iso-8601-date="2021-03-02">
          <day>02</day>
          <month>03</month>
          <year>2021</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2021-04-26">
          <day>26</day>
          <month>04</month>
          <year>2021</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© Dmitry I. Blokhin, Pavel N. Ivanov, Oleg L. Dudchenko</copyright-statement>
        <copyright-year>2021</copyright-year>
        <copyright-holder xml:lang="ru">Д. И. Блохин, П. Н. Иванов, О. Л. Дудченко</copyright-holder>
        <copyright-holder xml:lang="en">Dmitry I. Blokhin, Pavel N. Ivanov, Oleg L. Dudchenko</copyright-holder>
        <license xlink:href="http://creativecommons.org/licenses/by/4.0">
          <license-p>CC BY 4.0</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/13743">https://pmi.spmi.ru/pmi/article/view/13743</self-uri>
      <abstract xml:lang="ru">
        <p>Контроль устойчивости элементов каменных конструкций различных сооружений является обязательным условием их безопасной эксплуатации. Использование современных методик неразрушающей диагностики напряженно-деформированного состояния таких конструкций – эффективный, а во многих случаях единственный способ контроля. Исследования сопутствующего процессам деформирования твердых тел теплового излучения позволили обосновать и разработать метод, позволяющий бесконтактно получать информацию об изменениях напряженно-деформированного состояния в различных типах геоматериалов, включая известняки. Однако исследования влияния водонасыщенности горных пород на фиксируемые таким образом параметры теплового излучения в настоящее время носят поверхностный характер. Учет степени водонасыщения горных пород необходим при контроле механического состояния каменных сооружений, находящихся в непосредственном контакте с водой. Основной целью данной работы является исследование зависимостей изменений интенсивности теплового излучения с поверхности образцов известняка с различной влажностью в условиях одноосного сжатия. Полученные результаты показали ожидаемое значительное снижение механических свойств (предела прочности при одноосном сжатии и модуля упругости) водонасыщенных образцов в сравнении с сухими. При этом зафиксировано существенное увеличение интенсивности теплового излучения подвергаемых сжатию образцов известняка при повышении их водонасыщения, что обусловливает необходимость учета выявленной закономерности при идентификации изменений во времени напряженного состояния каменных конструкций, установленных по данным бесконтактной ИК-диагностики в реальных условиях.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Stability control of elements of stone constructions of various structures is a prerequisite for their safe operation. The use of modern methods of non-destructive diagnostics of the stress-strain state of such constructions is an effective, and in many cases the only way to control it. Studies of thermal radiation accompanying the processes of solid bodies deformation allowed to justify and develop a method that allows to obtain non-contact information about changes in the stress-strain state in various types of geomaterials, including limestones. However, studies of the water saturation influence of rocks on the thermal radiation parameters recorded in this way are currently superficial. Taking into account the water saturation degree of rocks is necessary when monitoring the mechanical condition of stone structures that are in direct contact with water. The main purpose of this work is to study the dependences of changes in the intensity of thermal radiation from the surface of limestone samples with different humidity under conditions of uniaxial compression. The obtained results showed the expected significant decrease in the mechanical properties (uniaxial compressive strength and elastic modulus) of water-saturated samples in comparison with dry ones. At the same time, a significant increase in the intensity of thermal radiation of limestone samples subjected to compression with an increase in their water saturation was recorded, which makes it necessary to take into account the revealed regularity when identifying changes in the stress state of stone structures established according to non-contact IR diagnostics in real conditions.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>каменные строительные конструкции</kwd>
        <kwd>известняк</kwd>
        <kwd>водонасыщенность</kwd>
        <kwd>осевые напряжения</kwd>
        <kwd>деформация</kwd>
        <kwd>мониторинг</kwd>
        <kwd>ИК-излучение</kwd>
        <kwd>лазерно-ультразвуковая диагностика</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>stone building constructions</kwd>
        <kwd>limestone</kwd>
        <kwd>water saturation</kwd>
        <kwd>axial stresses</kwd>
        <kwd>deformation</kwd>
        <kwd>monitoring</kwd>
        <kwd>IR radiation</kwd>
        <kwd>laser-ultrasonic diagnostics</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
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