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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-12803</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/12803</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">Calculation of free fall velocity of bodies in the medium</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>К расчету скорости свободного падения тел в среде</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Kudryashov</surname>
            <given-names>B. B.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Кудряшов</surname>
              <given-names>Б. Б.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kudryashov</surname>
              <given-names>B. B.</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="1961-02-28">
        <day>28</day>
        <month>02</month>
        <year>1961</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1961</year>
      </pub-date>
      <volume>41</volume>
      <issue>2</issue>
      <fpage>53</fpage>
      <lpage>68</lpage>
      <history>
        <date date-type="received" iso-8601-date="1960-08-30">
          <day>30</day>
          <month>08</month>
          <year>1960</year>
        </date>
        <date date-type="accepted" iso-8601-date="1960-10-26">
          <day>26</day>
          <month>10</month>
          <year>1960</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1961-02-28">
          <day>28</day>
          <month>02</month>
          <year>1961</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1961 Б. Б. Кудряшов</copyright-statement>
        <copyright-statement xml:lang="en">© 1961 B. B. Kudryashov</copyright-statement>
        <copyright-year>1961</copyright-year>
        <copyright-holder xml:lang="ru">Б. Б. Кудряшов</copyright-holder>
        <copyright-holder xml:lang="en">B. B. Kudryashov</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/12803">https://pmi.spmi.ru/pmi/article/view/12803</self-uri>
      <abstract xml:lang="ru">
        <p>Количественное определение скорости свободного падения тел в жидкой или газообразной среде имеет важнейшее значение в теории гидравлического и пневматического транспорта, гравитационных мето­дов обогащения, для расчета ряда аппаратов, машин, технологических процессов и, в частности, лежит в основе расчета потребного расхода жидкого или газообразного промывочного агента для выноса шлама при бурении скважин. При свободном падении в среде тело достигает конечной скорости, когда сила сопротивления среды становится равной движущей силе веса тела в среде.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Quantitative determination of the free fall velocity of a gel in a liquid or gaseous medium is of paramount importance in the theory of hydraulic and pneumatic transport, gravitational methods of enrichment, for the calculation of a number of apparatuses, machines, technological processes and, in particular, is the basis for calculating the required flow rate of liquid or gaseous flushing agent for the removal of cuttings when drilling wells.At free fall in the medium, the body reaches a finite velocity when the resistance force of the medium becomes equal to the driving force of the weight of the body in the medium.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
