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Volume 41 Issue S1
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ZHANG Chao, MA Chang-kun, YANG Chun-he, CHEN Qing-lin, PAN Zhen-kai. Effects of particle diameter on shear strength of tailings and stability of tailings dams[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 145-148. DOI: 10.11779/CJGE2019S1037
Citation: ZHANG Chao, MA Chang-kun, YANG Chun-he, CHEN Qing-lin, PAN Zhen-kai. Effects of particle diameter on shear strength of tailings and stability of tailings dams[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 145-148. DOI: 10.11779/CJGE2019S1037
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Effects of particle diameter on shear strength of tailings and stability of tailings dams

  • 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Chongqing University, Chongqing 400044, China

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  • Received Date: April 28, 2019
  • Published Date: July 14, 2019
    Graphical Abstract
    • Abstract
  • In order to solve the contradiction between safety damming and downhole filling of tailings dams, the effects of particle size on tailing strength and dam stability are studied. The tests show that, the weighted average particle size of tailings decreases slowly with the increase of dry beach length, the relationship between the weighted average particle size of tailings and the length of the beach is the power function deposition model. The internal friction angle of tailings decreases with the decrease of the weighted average particle size, and the internal friction angle of tailings decreases significantly when the weighted average particle size is less than 0.05 mm. The stability of tailings dams decreases with the decrease of the weighted average particle size, and the stability of dam decreases significantly when the weighted average particle size is less than 0.05 mm. The results of this study provide a reference for the boundary particle size of tailing sand for safe dam construction and coarse material-filled underground.
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    • References (6)
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