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Jiangxi Nonferrous Metals Society
ISSN：1674-9669
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CODEN YJKYA9
Volume 7 Issue 3
Jun.  2016
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RAO Yunzhang, YUAN Boyun, ZHANG Jiyong, WANG Dan, MA Shi. Simulation analysis of factors and secure thickness of horizontal pillar for backfilling[J]. Nonferrous Metals Science and Engineering, 2016, 7(3): 71-78. DOI: 10.13264/j.cnki.ysjskx.2016.03.013
Citation: RAO Yunzhang, YUAN Boyun, ZHANG Jiyong, WANG Dan, MA Shi. Simulation analysis of factors and secure thickness of horizontal pillar for backfilling[J]. Nonferrous Metals Science and Engineering, 2016, 7(3): 71-78. DOI: 10.13264/j.cnki.ysjskx.2016.03.013
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Simulation analysis of factors and secure thickness of horizontal pillar for backfilling

  • School of Resources and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

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  • Received Date: June 14, 2015
  • Published Date: June 29, 2016
    Graphical Abstract
    • Abstract
  • The factor weights for horizontal pillar stability were obtained to analyze the stability of horizontal pillar of the Dongtong' V ore by applying AHP analysis method. The results show that the thickness of the horizontal pillar is the most important factor. The minimum safety thickness of the horizontal pillars is 5 m by using the formula of small deformation of thin plate theory. A numerical model is established to make a further analysis. The stress, vertical displacement and plastic zone of horizontal pillar thickness of 5 m to 9 m are analyzed. It is concluded that the horizontal pillar is likely to collapse when its thickness is less than 7 m.
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    • References (15)
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