<?xml version="1.0" encoding="UTF-8"?>
<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" dtd-version="1.4" article-type="research-article">
  <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-9645</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/9645</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Прогнозирование и предотвращение чрезвычайных ситуаций и их последствий</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Forecasting and prevention of emergencies and their consequences</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Justification of parameters of the directional non-explosive method of rock destruction on the basis of expanding cement mixture</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Обоснование параметров направленного невзрывного метода разрушения пород на основе расширяющейся цементной смеси</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Borovkov</surname>
            <given-names>Yu. A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Боровков</surname>
              <given-names>Ю. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Borovkov</surname>
              <given-names>Yu. A.</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">Московская геолого-разведочная академия (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Moscow Geological Prospecting Academy (Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Sharov</surname>
            <given-names>K. V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Шаров</surname>
              <given-names>К. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Sharov</surname>
              <given-names>K. V.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Московская геолого-разведочная академия (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Moscow Geological Prospecting Academy (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2001-12-28">
        <day>28</day>
        <month>12</month>
        <year>2001</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2001</year>
      </pub-date>
      <volume>149</volume>
      <fpage>251</fpage>
      <lpage>254</lpage>
      <history>
        <date date-type="received" iso-8601-date="2000-10-15">
          <day>15</day>
          <month>10</month>
          <year>2000</year>
        </date>
        <date date-type="accepted" iso-8601-date="2000-11-03">
          <day>03</day>
          <month>11</month>
          <year>2000</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2001-12-28">
          <day>28</day>
          <month>12</month>
          <year>2001</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2001 Ю. А. Боровков, К. В. Шаров</copyright-statement>
        <copyright-statement xml:lang="en">© 2001 Yu. A. Borovkov, K. V. Sharov</copyright-statement>
        <copyright-year>2001</copyright-year>
        <copyright-holder xml:lang="ru">Ю. А. Боровков, К. В. Шаров</copyright-holder>
        <copyright-holder xml:lang="en">Yu. A. Borovkov, K. V. Sharov</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/9645">https://pmi.spmi.ru/pmi/article/view/9645</self-uri>
      <abstract xml:lang="ru">
        <p>Эффективность метода направленного раскола гипсовых пород с использованием невзрывной раз­рушающейся смеси на цементной основе (НРС) можно повысить за счет разработанной конструкции концентраторов напряжений в виде двух параллельных металлических пластин. Приведены расчет­ные формулы и графики развития направленной трещины между шпурами во времени.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The efficiency of the method of directional cracking of gypsum rocks using non-explosive cement-based fracture mixture (NBRM) can be increased by the developed design of stress concentrators in the form of two parallel metal plates. Design formulas and graphs of directional crack development between boreholes in time are presented.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
    <ref-list/>
  </back>
</article>
