›› 2004, Vol. 25 ›› Issue (2): 266-269.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Numerical simulation of failure mechanism of slender coal pillars

CHENG Guo-ming1, HUANG Kan2, WANG Si-jing1 , NING Ke 3   

  1. 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. Department of Resources Exploitation Engineering, China University of Mining and Technology, Beijing 100083, China; 3. North Surface Mine of Yima Coal Corporation, Yima 472302, China
  • Received:2002-11-11 Online:2004-02-10 Published:2014-07-15

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Abstract: Numerical simulation software FLAC2D is used to simulate the failure mechanism of slender coal pillars (which are of much lower width to height ratios) during high wall mining of thick seam. The results reproduce the whole process from the initiation of pillar failure, propagation, to plastic zone being joined together. The characteristics of stress distribution and failure mechanism of coal pillars are discussed by the numerically obtained stress yield during pillar deformation and failure process.

Key words: auger mining, coal pillar failure, numerical simulation

CLC Number: 

  • TB 115
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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