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<p>The underwater slopes formed by coastal sand mining are susceptible to erosion and damage caused by turbidity currents. In this study, the erosion and damage to underwater slopes caused by turbidity currents were elucidated in the context of a coastal quartz sand mining project on Hainan Island. Additionally, the destabilization of underwater slopes caused by turbidity currents was predicted. In this study, a physical similarity model of underwater slopes was constructed, including the erosion damage and destabilization process of turbidity currents on underwater slopes under turbulent flow conditions; moreover, the evolution of turbidity current density (TCD) and anchoring force loss (AFL) during the erosion process of underwater slopes was analyzed. Based on this, a critical index criterion for the erosion damage of underwater slopes was proposed. The validity of the critical index criterion was verified through numerical simulation. The conclusions of this study have important application value for the monitoring and early warning of underwater slope stability.</p>

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Monitoring of axial force loss in Pre-tensioned anchors induced by turbidity currents erosion on underwater slopes and its failure criteria

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • Huan Sun,
  • Qiaofeng Fan,
  • Xiaoli Liu,
  • Yi Lin,
  • Guojie Li,
  • Zhenni Ye

摘要

The underwater slopes formed by coastal sand mining are susceptible to erosion and damage caused by turbidity currents. In this study, the erosion and damage to underwater slopes caused by turbidity currents were elucidated in the context of a coastal quartz sand mining project on Hainan Island. Additionally, the destabilization of underwater slopes caused by turbidity currents was predicted. In this study, a physical similarity model of underwater slopes was constructed, including the erosion damage and destabilization process of turbidity currents on underwater slopes under turbulent flow conditions; moreover, the evolution of turbidity current density (TCD) and anchoring force loss (AFL) during the erosion process of underwater slopes was analyzed. Based on this, a critical index criterion for the erosion damage of underwater slopes was proposed. The validity of the critical index criterion was verified through numerical simulation. The conclusions of this study have important application value for the monitoring and early warning of underwater slope stability.