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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.2020.4.1</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-13576</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/13576</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">Decrease in coal losses during mining of contiguous seams in the near-bottom part at Vorkuta deposit</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Снижение потерь угля при отработке сближенных пластов донной части Воркутского месторождения</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Kazanin</surname>
            <given-names>Oleg I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Казанин</surname>
              <given-names>О. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kazanin</surname>
              <given-names>Oleg I.</given-names>
            </name>
          </name-alternatives>
          <email>Kazanin@spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-9663-6713</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Saint Petersburg Mining University (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Yaroshenko</surname>
            <given-names>Valeriy V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Ярошенко</surname>
              <given-names>В. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Yaroshenko</surname>
              <given-names>Valeriy V.</given-names>
            </name>
          </name-alternatives>
          <email>v92ya@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-2663-3300</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Saint Petersburg Mining University (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2020-10-08">
        <day>08</day>
        <month>10</month>
        <year>2020</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2020</year>
      </pub-date>
      <volume>244</volume>
      <fpage>395</fpage>
      <lpage>401</lpage>
      <history>
        <date date-type="received" iso-8601-date="2020-02-19">
          <day>19</day>
          <month>02</month>
          <year>2020</year>
        </date>
        <date date-type="accepted" iso-8601-date="2020-04-17">
          <day>17</day>
          <month>04</month>
          <year>2020</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2020-10-08">
          <day>08</day>
          <month>10</month>
          <year>2020</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© Oleg I. Kazanin, Valeriy V. Yaroshenko</copyright-statement>
        <copyright-year>2020</copyright-year>
        <copyright-holder xml:lang="ru">О. И. Казанин, В. В. Ярошенко</copyright-holder>
        <copyright-holder xml:lang="en">Oleg I. Kazanin, Valeriy V. Yaroshenko</copyright-holder>
        <license xlink:href="http://creativecommons.org/licenses/by/4.0">
          <license-p>CC BY 4.0</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/13576">https://pmi.spmi.ru/pmi/article/view/13576</self-uri>
      <abstract xml:lang="ru">
        <p>На примере шахт АО «Воркутауголь» рассмотрена проблема образования протяженных зон повышенного горного давления (ПГД) от целиков на границах выемочных столбов, образовавшихся из-за раскройки шахтного поля сложной геометрии. Проведен детальный анализ оставшихся запасов донной части месторождения для подсчета потерь, влияния зон ПГД от защитного пласта «Четвертый» на горные работы по верхнему пласту «Тройной», а также возможностей уменьшения размеров зон ПГД за счет расширения подработанного пространства. В результате исследования донной части Воркутского месторождения в рамках принятой раскройки были выделены участок на шахте «Комсомольская» и два участка на шахте «Заполярная-2», где потери на границах выемочных столбов составляют 13-22 % от общих объемов запасов в шахтном поле. Большой объем потерь в данных целиках говорит об актуальности исследований влияния первоочередной выемки защитных пластов на эффективность и безопасность горных работ на выемочных участках пластов в подработанных зонах и зонах ПГД. На основании анализа зарубежного и российского опыта доработки целиков на границах выемочных участков, а также методических руководств и инструкций была разработана технологическая схема, позволяющая повысить коэффициент извлечения угля в донной части Воркутского месторождения с 0,75 до 0,9 без принципиального изменения вентиляционной и транспортной сетей, а также без закупки дополнительного горного оборудования. Проведенные экономические расчеты подтвердили эффективность внедрения новой технологической схемы для доработки запасов на границах выемочных участков. Экономический эффект составляет 0,079-1,381 млрд руб. дополнительной прибыли с соосных выемочных столбов в зависимости от горно-геологических условий и размеров целиков.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The problem of formation of extended zones with high rock pressure (HRP) from safety pillars at the boundaries of extraction pillars formed due to the mine layout of complex geometry is considered at the example of JSC Vorkutaugol mines. A detailed analysis of the remaining reserves of the near-bottom part of the deposit was carried out to estimate losses and the impact of HRP zones from the Chetvertyi protective seam to mining operations on the Troinoi upper seam along with the possibilities for the reduction of sizes of HRP zones at the account of expanding the underworked space. Due to research on the near-bottom part of the Vorkuta deposit, within the framework of the accepted layout, a zone at the Komsomolskaya mine and two zones at the Zapolyarnaya-2 mine were singled out, at which losses at the boundaries of the extraction pillars amount up to 13-22 % of the total resources of the mine field. The high volume of losses in these pillars indicates the relevance of research on the priority extraction impact of protective seams on the efficiency and safety of mining operations in the working area of underworked and HRP zones. Based on the analysis of foreign and Russian experience in the pillar cleaning-up at the boundaries of working areas and the methodical guidelines and instructions, a technological scheme was developed that allows increasing the coal mining recovery factor in the near-bottom part of the Vorkuta deposit from 0.75 to 0.9 without fundamental changing of the ventilation and transport networks and also without purchasing any additional mining equipment. The conducted economic calculations confirmed the effectiveness of implementing the new technological scheme for cleaning-up reserves at the boundaries of extraction districts. The economic effect is from 0.079 to1.381 billion rubles of additional profit from coaxial extraction pillars, depending on the mining and geological conditions and the size of the pillars.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>целик</kwd>
        <kwd>потери</kwd>
        <kwd>сближенные пласты</kwd>
        <kwd>повышенное горное давление</kwd>
        <kwd>технологические схемы</kwd>
        <kwd>Воркутское месторождение</kwd>
        <kwd>выемочный участок</kwd>
        <kwd>подработанные зоны</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>pillar</kwd>
        <kwd>losses</kwd>
        <kwd>contiguous seams</kwd>
        <kwd>high rock pressure</kwd>
        <kwd>technological schemes</kwd>
        <kwd>Vorkuta deposit</kwd>
        <kwd>extraction district</kwd>
        <kwd>underworked zones</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
