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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-12208</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/12208</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">Estimation of mechanical properties of complex roof rocks in mines of the Leningrad oil shale deposit</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Оценка механических свойств пород кровли сложного строения в шахтах Ленинградского месторождения горючих сланцев</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Dashko</surname>
            <given-names>R. E.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Дашко</surname>
              <given-names>Р. Э.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Dashko</surname>
              <given-names>R. E.</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"/>
          </aff>
          <aff>
            <institution xml:lang="en"/>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Kuznetsov</surname>
            <given-names>Yu. F.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Кузнецов</surname>
              <given-names>Ю. Ф.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kuznetsov</surname>
              <given-names>Yu. F.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru"/>
          </aff>
          <aff>
            <institution xml:lang="en"/>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1969-01-13">
        <day>13</day>
        <month>01</month>
        <year>1969</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1969</year>
      </pub-date>
      <volume>57</volume>
      <issue>1</issue>
      <fpage>45</fpage>
      <lpage>51</lpage>
      <history>
        <date date-type="received" iso-8601-date="1968-07-30">
          <day>30</day>
          <month>07</month>
          <year>1968</year>
        </date>
        <date date-type="accepted" iso-8601-date="1968-09-18">
          <day>18</day>
          <month>09</month>
          <year>1968</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1969-01-13">
          <day>13</day>
          <month>01</month>
          <year>1969</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© R. E. Dashko, Yu. F. Kuznetsov</copyright-statement>
        <copyright-year>1969</copyright-year>
        <copyright-holder xml:lang="ru">Р. Э. Дашко, Ю. Ф. Кузнецов</copyright-holder>
        <copyright-holder xml:lang="en">R. E. Dashko, Yu. F. Kuznetsov</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/12208">https://pmi.spmi.ru/pmi/article/view/12208</self-uri>
      <abstract xml:lang="ru">
        <p>Геологический разрез кровли Ленинградского месторождения до­вольно сложен и характеризуется большим разнообразием литологи­ческих типов (от слабых глинистых горючих сланцев до весьма проч­ных известняков), их изменчивостью по расстояниям залегания от кровли промпачки и мощности. Наиболее опасной с точки зрения возмож­ности обрушения является 90-сантиметровая пачка пород, считая от кровли промпласта, разрез которой наиболее сложен и обобщенно может быть представлен в следующем виде.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The geological section of the roof of the Leningrad deposit is rather complex and is characterized by a great variety of lithological types (from weak clay shales to very strong limestones), their variability in terms of distance from the tundish roof and thickness. The most dangerous in terms of the possibility of collapse is a 90-centimeter layer of rocks, counting from the roof of the promplast, the section of which is the most complex and can be generalized in the following form.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
    <ref-list>
      <ref id="ref1">
        <label>1</label>
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        <mixed-citation xml:lang="ru">Фисенко Г. Л. Устойчивость бортов карьера. Недра. 1965.</mixed-citation>
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  </back>
</article>
