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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-12200</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/12200</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">Calculation method of geometrical parameters of screw-drilling tips</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Методика расчета геометрических параметров винтобуровых наконечников</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Hesse</surname>
            <given-names>I. D.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Гессе</surname>
              <given-names>И. Д.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Hesse</surname>
              <given-names>I. D.</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"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1969-08-20">
        <day>20</day>
        <month>08</month>
        <year>1969</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1969</year>
      </pub-date>
      <volume>57</volume>
      <issue>2</issue>
      <fpage>132</fpage>
      <lpage>138</lpage>
      <history>
        <date date-type="received" iso-8601-date="1968-08-25">
          <day>25</day>
          <month>08</month>
          <year>1968</year>
        </date>
        <date date-type="accepted" iso-8601-date="1968-10-02">
          <day>02</day>
          <month>10</month>
          <year>1968</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1969-08-20">
          <day>20</day>
          <month>08</month>
          <year>1969</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1969 И. Д. Гессе</copyright-statement>
        <copyright-statement xml:lang="en">© 1969 I. D. Hesse</copyright-statement>
        <copyright-year>1969</copyright-year>
        <copyright-holder xml:lang="ru">И. Д. Гессе</copyright-holder>
        <copyright-holder xml:lang="en">I. D. Hesse</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/12200">https://pmi.spmi.ru/pmi/article/view/12200</self-uri>
      <abstract xml:lang="ru">
        <p>В настоящее время в поисковом и разведочном бурении все боль­шее распространение получают способы проходки рыхлых пород, осно­ванные на их уплотнении. К таким способам относятся задавливание и вибробурение. Эти способы применяются при проходке пород I—III категорий по буримости для классификации вращательного буре­ния и обладают высокой механической скоростью.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Nowadays in prospecting and exploration drilling the methods of sinking loose rocks based on their compaction are becoming more and more widespread. Such methods include squeezing and vibratory drilling. These methods are applied at penetration of rocks of I-III categories on drillability for classification of rotary drilling and have high mechanical speed.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
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</article>
