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Study on the evolutionary mechanisms driving deformation damage of dry tailing stack earth–rock dam under short-term extreme rainfall conditions

Author

Listed:
  • Chengyu Xie

    (Xiangtan University)

  • Ziwei Chen

    (Xiangtan University)

  • Guanpeng Xiong

    (Xiangtan University)

  • Baolin Yang

    (Xiangtan University)

  • Jinbo Shen

    (Xiangtan University)

Abstract

With the impact of global climate change, dry tailing stack earth–rock dam endures more pressure from short-term extreme rainfall, which is easy to induce dam failure and leads to environmental disasters. In order to further clarify the threat caused by short-term extreme rainfall, taking the actual dry tailings stockpiling as the engineering background, using the research methods of indoor similarity test and numerical simulation, at the same time introducing the technical means of 3D reconstruction based on multi-directional images. The dynamic and high-precision point cloud was obtained, the evolution process of deformation and damage was described in detail, the mechanism and characteristics of disaster occurrence were revealed, and a comprehensive management method was proposed. Research shows that the evolution process of dry tailings rock stack earth–rock dam is divided into four stages: natural state, surface erosion, rill development, and gully and collapse. The dam abutment and dam foot are high-risk areas. The displacement generated by the earth–rock dam gradually spreads from the dam foot to the dam abutment and finally covers the entire outer dam surface; the plastic strain area is always concentrated at the dam foot. The main disaster modes are scouring and erosion disasters, gully and local collapse disasters, and soil erosion disasters. Natural cracks and the structural characteristics of soil particle size also affected the evolution of deformation and failure, as well as the occurrence of disasters. This study has important practical significance for the prediction of geological hazards and the development of disaster prevention and mitigation in tailings dry storage yards.

Suggested Citation

  • Chengyu Xie & Ziwei Chen & Guanpeng Xiong & Baolin Yang & Jinbo Shen, 2023. "Study on the evolutionary mechanisms driving deformation damage of dry tailing stack earth–rock dam under short-term extreme rainfall conditions," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 119(3), pages 1913-1939, December.
    • Handle: RePEc:spr:nathaz:v:119:y:2023:i:3:d:10.1007_s11069-023-06190-9
    DOI: 10.1007/s11069-023-06190-9
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    References listed on IDEAS

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    1. Solomon Z. Dobrowski & Sean A. Parks, 2016. "Climate change velocity underestimates climate change exposure in mountainous regions," Nature Communications, Nature, vol. 7(1), pages 1-8, November.
    2. Cox, Benjamin & Innis, Sally & Mortaza, Adnan & Kunz, Nadja C. & Steen, John, 2022. "A unified metric for costing tailings dams and the consequences for tailings management," Resources Policy, Elsevier, vol. 78(C).
    3. Sen Tian & Xuanyan Dai & Guangjin Wang & Yiyu Lu & Jie Chen, 2021. "Formation and evolution characteristics of dam breach and tailings flow from dam failure: an experimental study," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 107(2), pages 1621-1638, June.
    4. Ziwei Chen & Chengyu Xie & Guanpeng Xiong & Jinbo Shen & Baolin Yang, 2023. "Using the Morgenstern–Price Method and Cloud Theory to Invert the Shear Strength Index of Tailings Dams and Reveal the Coupling Deformation and Failure Law under Extreme Rainfall," Sustainability, MDPI, vol. 15(7), pages 1-24, March.
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    Cited by:

    1. Baojun Guan & Jingming Hou & Jiahao Lv & Donglai Li & Guangzhao Chen & Yuan Fang & Lei Shi, 2025. "Numerical Simulation of Dam-Break Flood Routing in Pumped Storage Power Stations with Multi-Conditions and Disaster Impact Analysis," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 39(2), pages 741-757, January.

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