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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-7983</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/7983</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Горное дело. Экология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Mining. Ecology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Efficiency of methane drainage of coal seams  in Polish underground mines</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Napieraj</surname>
            <given-names>Sebastian </given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Napieraj</surname>
              <given-names>Sebastian </given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Napieraj</surname>
              <given-names>Sebastian </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">AGH - Университет науки и технологии (Краков, Польша)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">AGH – University of Science and Technology (Krakow, Poland)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2006-04-07">
        <day>07</day>
        <month>04</month>
        <year>2006</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2006</year>
      </pub-date>
      <volume>167</volume>
      <issue>2</issue>
      <fpage>145</fpage>
      <lpage>148</lpage>
      <history>
        <date date-type="received" iso-8601-date="2005-07-19">
          <day>19</day>
          <month>07</month>
          <year>2005</year>
        </date>
        <date date-type="accepted" iso-8601-date="2005-08-13">
          <day>13</day>
          <month>08</month>
          <year>2005</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2006-04-07">
          <day>07</day>
          <month>04</month>
          <year>2006</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2006 Sebastian  Napieraj</copyright-statement>
        <copyright-statement xml:lang="en">© 2006 Sebastian  Napieraj</copyright-statement>
        <copyright-year>2006</copyright-year>
        <copyright-holder xml:lang="ru">Sebastian  Napieraj</copyright-holder>
        <copyright-holder xml:lang="en">Sebastian  Napieraj</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/7983">https://pmi.spmi.ru/pmi/article/view/7983</self-uri>
      <abstract xml:lang="ru">
        <p>Добыча угля в польских шахтах производится в условиях природных угроз, таких как наличие метана, возможность возгорания и взрыва угольной пыли. Шахтная вентиляция является одним из основных средств контроля содержания метана. Отвод метана в польских угольных шахтах производится с эксплуатационных участков, узких выработок, особенно при их прохождении, и из выработанного пространства. Отвод метана оценивается по потоку метана от вентилируемой зоны до системы вентиляции.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Coal exploitation in Polish mines is conducted under conditions of associated natural hazards such as methane, fire and coal dust explosion hazards. Orogen drainage is one of the main means of self-monitoring of methane hazards. The possibility of orogen drainage has been approached both from the surface and from underground workings with openings. Methane drainage in a Polish coal mine is caused by: former mine workings, dog-hole workings, especially during their sinking, and haulm. Methane drainage is estimated by the methane flux accompanied in drainage processes to the total methane flux from drainage and ventilation.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
