Fracturing of an Euler-Bernoulli beam in coal mine pillar extraction

C.P. Please, D.P. Mason, C.M. Khalique, J.M.T. Ngnotchouye, A.J. Hutchinson, J.N. van der Merwe, H. Yilmaz

Research output: Contribution to journalArticlepeer-review


The paper models the first stage of the process of pillar extraction in a coal mine. The problem of understanding how a coal mine roof collapses after secondary cutting of the supporting pillars to create small supporting snooks is considered. The fracture of the roof is considered when a set of snooks have failed and the roof must support itself between two pillars. Models that account for the relative importance of the overburden weight on the roof and the compressive stresses in the roof are examined using a simple strut and beam theory.
Original languageEnglish
Pages (from-to)132-138
Number of pages7
JournalInternational Journal of Rock Mechanics and Mining Sciences
Early online date20 Sept 2013
Publication statusPublished - Dec 2013


  • coal mine
  • pillar extraction
  • snook
  • bending moment
  • Euler–Bernoulli beam
  • Euler strut


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