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Volume 39 Issue 5
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DENG Zhao, CHEN Sheng-shui, ZHONG Qi-ming. Mathematical model for breach of tailings dam due to overtopping and its application[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(5): 932-938. DOI: 10.11779/CJGE201705018
Citation: DENG Zhao, CHEN Sheng-shui, ZHONG Qi-ming. Mathematical model for breach of tailings dam due to overtopping and its application[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(5): 932-938. DOI: 10.11779/CJGE201705018
shu

Mathematical model for breach of tailings dam due to overtopping and its application

  • 1. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China;
    2. Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-Rock Dam of the Ministry of Water Resources, Nanjing 210024, China

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  • Received Date: February 17, 2016
  • Published Date: May 24, 2017
    Graphical Abstract
    • Abstract
  • Based on the non-equilibrium continuous equation and momentum equation for water-sand mixture, considering the impact on the variation of sand volume concentration due to the change of breach slope and bed, a mathematical model is established to describe the breach development and drainage process of tailings dam. The mathematical model is employed to simulate the breach process of a tailings dam. The calculated results show that the volume concentration of tailing sand changes greatly during the drainage process. At the early stage of drainage, the main part of the discharge materials is water, and the distribution of sand is mainly suspended load. At the later stage, the main part of the discharge materials is sand, and the distribution of sand is mainly bed load. The drainage process stops while the bed shear stress increment of discharge materials is less than the critical shear stress of sand.
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    • References (34)
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