Scholarlink

<p>Landslides induced by rainfall on expressway slopes pose a serious threat to transportation safety. Rainfall infiltration can significantly change the internal mechanical state of slopes and induce instability, making effective monitoring and warning methods based on force are essential for expressway slopes. This study focuses on the K3278 slope on the Daqing–Guangzhou expressway and proposes a landslide monitoring and early warning method based on variations of anchor cable tension. The feasibility of the proposed method is verified through systematic analysis of monitoring data and field investigations, while engineering geological analysis combined with numerical simulation is used to clarify the landslide failure mechanism. Monitoring results indicate that variations in anchor cable tension respond earlier than surface displacement, providing advance warning times of 7 days and 2 days during two deformation events. Numerical analysis further shows that as the groundwater level rises, the slope safety factor decreases nonlinearly at an accelerating rate, indicating an increasingly adverse effect of groundwater rise on slope stability. </p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Analysis of anchor cable tension monitoring parameters and landslide instability mechanism induced by rainfall: a case study of the K3278 highway slope

  • 期刊论文

  • 发表日期：

    2026年7月13日

查看全文
  • Xiu Kexin,
  • Tao Zhigang,
  • Pang Shihui,
  • Gao Liang,
  • Zang Haoyu

摘要

Landslides induced by rainfall on expressway slopes pose a serious threat to transportation safety. Rainfall infiltration can significantly change the internal mechanical state of slopes and induce instability, making effective monitoring and warning methods based on force are essential for expressway slopes. This study focuses on the K3278 slope on the Daqing–Guangzhou expressway and proposes a landslide monitoring and early warning method based on variations of anchor cable tension. The feasibility of the proposed method is verified through systematic analysis of monitoring data and field investigations, while engineering geological analysis combined with numerical simulation is used to clarify the landslide failure mechanism. Monitoring results indicate that variations in anchor cable tension respond earlier than surface displacement, providing advance warning times of 7 days and 2 days during two deformation events. Numerical analysis further shows that as the groundwater level rises, the slope safety factor decreases nonlinearly at an accelerating rate, indicating an increasingly adverse effect of groundwater rise on slope stability.