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<p>In recent years, landslides triggered by the combined effects of artificial excavation and rainfall have occurred frequently, posing significant hazards to both engineering construction and human life. This study investigates a landslide in Houlang Village, China, triggered by the combined effect of continuous rainfall and slope excavation in a fault-controlled geological setting. A detailed in-situ investigation, geological survey, and sampling analysis were carried out to identify the distribution of strata and the characteristics of the fault structure. The stability of the slope under varying conditions was examined via numerical analysis and monitoring. The findings indicate that: (1) Fault structure and the resultant stratigraphy are the primary causes of the landslide; (2) Prolonged rainfall, a rapid rise in groundwater levels, and the subsequent reduction in soil strength ultimately led to shallow-seated traction landslide; (3) Human activities, including improper excavation and unsealed boreholes, created cracks that facilitated rainwater infiltration, triggering the landslide. The slopes were successfully stabilized using an integrated system of anti-slide piles, anchor cable frames, retaining walls, and drainage measures. This study provides valuable insights for the prevention of landslides caused by the coupling of rainfall and artificial excavation in fault-controlled settings.</p>

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Analysis of the failure mechanisms and treatment effectiveness of the Houlang village landslide

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Ke Wu Liao,
  • Qing Yu Zhang,
  • Qing Lü,
  • Pin Hong Gao

摘要

In recent years, landslides triggered by the combined effects of artificial excavation and rainfall have occurred frequently, posing significant hazards to both engineering construction and human life. This study investigates a landslide in Houlang Village, China, triggered by the combined effect of continuous rainfall and slope excavation in a fault-controlled geological setting. A detailed in-situ investigation, geological survey, and sampling analysis were carried out to identify the distribution of strata and the characteristics of the fault structure. The stability of the slope under varying conditions was examined via numerical analysis and monitoring. The findings indicate that: (1) Fault structure and the resultant stratigraphy are the primary causes of the landslide; (2) Prolonged rainfall, a rapid rise in groundwater levels, and the subsequent reduction in soil strength ultimately led to shallow-seated traction landslide; (3) Human activities, including improper excavation and unsealed boreholes, created cracks that facilitated rainwater infiltration, triggering the landslide. The slopes were successfully stabilized using an integrated system of anti-slide piles, anchor cable frames, retaining walls, and drainage measures. This study provides valuable insights for the prevention of landslides caused by the coupling of rainfall and artificial excavation in fault-controlled settings.