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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 custom-type="pmi" pub-id-type="custom">pmi-12136</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/12136</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Без раздела</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Without section</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Excavation of barrier pillars during mining of ore fields by caving systems</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Выемка барьерных целиков при отработке рудных полей системами с обрушением</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Galaev</surname>
            <given-names>N. Z.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Галаев</surname>
              <given-names>Н. З.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Galaev</surname>
              <given-names>N. Z.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1969-05-05">
        <day>05</day>
        <month>05</month>
        <year>1969</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1969</year>
      </pub-date>
      <volume>58</volume>
      <issue>1</issue>
      <fpage>21</fpage>
      <lpage>28</lpage>
      <history>
        <date date-type="received" iso-8601-date="1968-07-05">
          <day>05</day>
          <month>07</month>
          <year>1968</year>
        </date>
        <date date-type="accepted" iso-8601-date="1968-09-03">
          <day>03</day>
          <month>09</month>
          <year>1968</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1969-05-05">
          <day>05</day>
          <month>05</month>
          <year>1969</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1969 Н. З. Галаев</copyright-statement>
        <copyright-statement xml:lang="en">© 1969 N. Z. Galaev</copyright-statement>
        <copyright-year>1969</copyright-year>
        <copyright-holder xml:lang="ru">Н. З. Галаев</copyright-holder>
        <copyright-holder xml:lang="en">N. Z. Galaev</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/12136">https://pmi.spmi.ru/pmi/article/view/12136</self-uri>
      <abstract xml:lang="ru">
        <p>При разработке горизонтальных или пологопадающих руд­ных месторождений для улучшения условий проветривания, предотвращения проникновения вод и газов, локализации обрушений и других целей бывает необходимо оставлять барьерные целики, которые разделяют рудное тело на отдель­ные поля. Эти целики при значительных запасах руды в них иногда извлекаются после отработки смежных полей...</p>
      </abstract>
      <abstract xml:lang="en">
        <p>In the development of horizontal or declining ore deposits to improve the conditions of ventilation, prevent the penetration of water and gases, localization of cave-ins and other purposes it is sometimes necessary to leave barrier pillars that divide the ore body into separate fields. In case of significant ore reserves, these pillars are sometimes extracted after mining of adjacent fields...</p>
      </abstract>
    </article-meta>
  </front>
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