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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-12833</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/12833</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">Influence of rod pre-tensioning on the bearing capacity of the roof of underground workings</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Влияние предварительного натяжения штанг на несущую способность кровли подземных выработок</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Kravchenko</surname>
            <given-names>G. I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Кравченко</surname>
              <given-names>Г. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kravchenko</surname>
              <given-names>G. I.</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-group>
      <pub-date pub-type="epub" iso-8601-date="1959-12-19">
        <day>19</day>
        <month>12</month>
        <year>1959</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1960</year>
      </pub-date>
      <volume>42</volume>
      <issue>1</issue>
      <fpage>108</fpage>
      <lpage>121</lpage>
      <history>
        <date date-type="received" iso-8601-date="1959-07-07">
          <day>07</day>
          <month>07</month>
          <year>1959</year>
        </date>
        <date date-type="accepted" iso-8601-date="1959-09-18">
          <day>18</day>
          <month>09</month>
          <year>1959</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1959-12-19">
          <day>19</day>
          <month>12</month>
          <year>1959</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1959 Г. И. Кравченко</copyright-statement>
        <copyright-statement xml:lang="en">© 1959 G. I. Kravchenko</copyright-statement>
        <copyright-year>1959</copyright-year>
        <copyright-holder xml:lang="ru">Г. И. Кравченко</copyright-holder>
        <copyright-holder xml:lang="en">G. I. Kravchenko</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/12833">https://pmi.spmi.ru/pmi/article/view/12833</self-uri>
      <abstract xml:lang="ru">
        <p>Штанговую крепь осваивают пока преимущественно на основе пра­ктического опыта, так как ее теория недостаточно разработана. Штанги представляют собой пассивные подвески только при слабой непосредственной кровле и прочной породе основной кровли. Во всех других случаях установка и раскрепление штанг в породе изменяют несущую способность кровли, хотя механические свойства образцов, из­готовленных из породы, скрепленной и нескрепленной штангами, ко­нечно, остаются одинаковыми.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>So far, the rod fasteners have been mastered mainly on the basis of practical experience, as its theory is not sufficiently developed. The rods are passive suspensions only when the immediate roof is weak and the main roof rock is strong. In all other cases, the installation and loosening of rods in the rock change the bearing capacity of the roof, although the mechanical properties of samples made of rock, bonded and unbonded rods, of course, remain the same.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
