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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-11620</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/11620</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">Grapho-analytical solution of the problem on determination of the rate of penetration in hard rock drilling</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Графо-аналитическое решение задачи на определение скорости проходки при бурении твердой породы</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Tarakanov</surname>
            <given-names>S. N.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Тараканов</surname>
              <given-names>С. Н.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Tarakanov</surname>
              <given-names>S. N.</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="1973-01-01">
        <day>01</day>
        <month>01</month>
        <year>1973</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1973</year>
      </pub-date>
      <volume>66</volume>
      <issue>1</issue>
      <fpage>19</fpage>
      <lpage>32</lpage>
      <history>
        <date date-type="received" iso-8601-date="1972-07-03">
          <day>03</day>
          <month>07</month>
          <year>1972</year>
        </date>
        <date date-type="accepted" iso-8601-date="1972-09-18">
          <day>18</day>
          <month>09</month>
          <year>1972</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1973-01-01">
          <day>01</day>
          <month>01</month>
          <year>1973</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1973 С. Н. Тараканов</copyright-statement>
        <copyright-statement xml:lang="en">© 1973 S. N. Tarakanov</copyright-statement>
        <copyright-year>1973</copyright-year>
        <copyright-holder xml:lang="ru">С. Н. Тараканов</copyright-holder>
        <copyright-holder xml:lang="en">S. N. Tarakanov</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/11620">https://pmi.spmi.ru/pmi/article/view/11620</self-uri>
      <abstract xml:lang="ru">
        <p>В статье рассмотрено основное решение задачи о скорости проход­ки, опирающееся на теоретические положения, изложенные ранее. Ре­шение базируется на постоянстве площади контакта резца во времени бурения, на разделении глубины внедрения площади контакта на две части — верхнюю и нижнюю.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The paper considers the basic solution of the sinking rate problem based on the theoretical provisions stated earlier. The solution is based on the constancy of the cutter contact area during drilling time, on the division of the depth of the contact area introduction into two parts - upper and lower.</p>
      </abstract>
    </article-meta>
  </front>
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