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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 pub-id-type="doi">10.31897/PMI.2021.5.3</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-14710</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/14710</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геотехнология и инженерная геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geotechnical Engineering and Engineering Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Physical and mathematical model of rock destruction  by a milling machine cutter</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Физико-математическая модель разрушения горных пород  зубом фрезерной установки</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Shemyakin</surname>
            <given-names>Stanislav A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Шемякин</surname>
              <given-names>С. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Shemyakin</surname>
              <given-names>Stanislav A.</given-names>
            </name>
          </name-alternatives>
          <email>000403@pnu.edu.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-3238-0840</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Тихоокеанский государственный университет (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Pacific National University (Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Shishkin</surname>
            <given-names>Evgenii A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Шишкин</surname>
              <given-names>Е. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Shishkin</surname>
              <given-names>Evgenii A.</given-names>
            </name>
          </name-alternatives>
          <email>004655@pnu.edu.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-4387-0228</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Тихоокеанский государственный университет (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Pacific National University (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2021-12-16">
        <day>16</day>
        <month>12</month>
        <year>2021</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2021</year>
      </pub-date>
      <volume>251</volume>
      <fpage>639</fpage>
      <lpage>647</lpage>
      <history>
        <date date-type="received" iso-8601-date="2021-03-05">
          <day>05</day>
          <month>03</month>
          <year>2021</year>
        </date>
        <date date-type="accepted" iso-8601-date="2021-10-18">
          <day>18</day>
          <month>10</month>
          <year>2021</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2021-12-16">
          <day>16</day>
          <month>12</month>
          <year>2021</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2021 С. А. Шемякин, Е. А. Шишкин</copyright-statement>
        <copyright-statement xml:lang="en">© 2021 Stanislav A. Shemyakin, Evgenii A. Shishkin</copyright-statement>
        <copyright-year>2021</copyright-year>
        <copyright-holder xml:lang="ru">С. А. Шемякин, Е. А. Шишкин</copyright-holder>
        <copyright-holder xml:lang="en">Stanislav A. Shemyakin, Evgenii A. Shishkin</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/14710">https://pmi.spmi.ru/pmi/article/view/14710</self-uri>
      <abstract xml:lang="ru">
        <p>В результате анализа работ по разрушению пород резцами фрезерных установок установлено, что существующие разработки не дают возможности перейти к выводу расчетных зависимостей для определения сопротивлений разрушению, либо могут быть использованы только в предварительных расчетах параметров известных по конструкции фрезерных установок. Для устранения указанных недостатков была разработана комбинированная физико-математическая модель процесса взаимодействия одиночного резца со сферическим наконечником с породой. Рассмотрение физической картины действия сил и напряжений со стороны резца со сферическими наконечниками на отделяющийся элемент породы в предельном состоянии позволило аналитически описать составляющие полного сопротивления, являющиеся математической частью физико-математической модели разрушения пород резцами. Получены аналитические зависимости для определения касательной и нормальной составляющих сопротивления разрушению пород средней крепости. Проведена проверка адекватности физико-математической модели физическому процессу разрушения пород различной крепости резцом на универсальном стенде как в полевых, так и в лабораторных условиях. Техническая оценка результатов экспериментальных исследований подтверждает достоверность разработанной физико-математической модели.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>As a result of the analysis of the work on rock destruction by cutters of milling of machines, it was found that the existing developments do not allow us to proceed to the derivation of calculation d dependencies for determining fracture resistance, or can be used only in preliminary calculations of the known by design parameters of milling machines. To eliminate these disadvantages, a combined physical and mathematical model of the process of interaction of a single milling cutter with a spherical tip with the rock has been developed. Consideration of the physical picture of the action of forces and stresses acting from the cutter with spherical tips on the separating rock element in the limiting condition allowed to describe analytically the components of total resistance, which are the mathematical part of the physical and mathematical model of rock destruction by cutters. Analytical dependences for determining the tangential and normal components of fracture resistance of rocks of medium hardness have been obtained. The adequacy of the physical and mathematical model to the physical process of destruction of rocks of different hardness by cutters on a universal stand was tested both in the field and in the laboratory conditions. Technical evaluation of the results of experimental studies confirms the reliability of the developed physical and mathematical model.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>горные породы</kwd>
        <kwd>фрезерные установки</kwd>
        <kwd>процесс разрушения</kwd>
        <kwd>резцы</kwd>
        <kwd>сопротивление разрушению</kwd>
        <kwd>физико-математическая модель</kwd>
        <kwd>стенд</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>rocks</kwd>
        <kwd>milling machines</kwd>
        <kwd>destruction process</kwd>
        <kwd>cutters</kwd>
        <kwd>fracture resistance</kwd>
        <kwd>physical and mathematical model</kwd>
        <kwd>stand</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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