Classification of protective pillars toward higher safety and innovation in room-and-pillar coal mining

S. A. Prokopenko, V. V. Sementsov, M. S. Dobrovolsky, E. V. Nifanov

Research output: Contribution to journalArticlepeer-review


During room-and-pillar mining, protective pillars of coal are usually left standing. The protective pillars differ in shape, size, process properties and extractability ratios of coal. The authors propose a classification of the protective pillars with respect to their structure and shape in order to estimate and predict their properties. The extractability ratios of coal are calculated for the initial rib pillars and panels at different final shapes of protective pillars. The protective pillars are ranked with respects to the coal extractability ratios. Such systematization of pillars enables selecting the best engineering solutions and innovative improvement of room-and-pillar mining in specific geological conditions toward enhanced safety and efficiency of underground coal production.

Original languageEnglish
Pages (from-to)24-27
Number of pages4
JournalEurasian Mining
Issue number2
Publication statusPublished - 2020


  • Classification
  • Cut
  • Cutter–loader
  • Extractability ratio
  • Losses
  • Mine
  • Protective pillar
  • Rib pillar
  • Room-and-pillar mining
  • Shape

ASJC Scopus subject areas

  • Business and International Management
  • Geotechnical Engineering and Engineering Geology
  • Economic Geology
  • Industrial and Manufacturing Engineering
  • Management of Technology and Innovation

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