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<p>This study optimizes the design of ground anchor systems to reinforce slopes in the red basaltic soil region of DaLat, Vietnam, addressing the critical risk of landslides. The Finite Element Method (FEM) and the Shear Strength Reduction (SSR) technisque are employed to investigate the effects of anchor spacing and inclination angles on the stability of slopes with varying gradients. The present findings indicate that the Factor of Safety (FoS) increases significantly as anchor spacing decreases. To achieve high reinforcement efficiency, it is recommended to prioritize spacing configurations not exceeding 4&#xa0;m. The optimal inclination angle <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\alpha\)</EquationSource> </InlineEquation> is determined to depend directly on the slope gradient: for steeper slopes with gradients not exceeding 1H:1.5V, inclination angles ranging from 30° to 40° are recommended, whereas for gentler slopes with gradients of 1H:2V and above, higher inclination angles ranging from 40° to 45° are preferred.</p>

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A Case Study of Ground Anchor Effectiveness on Slope Stability in Red Basaltic Soil

  • 期刊论文

  • 发表日期：

    2026年3月9日

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  • Duy Khang Pham,
  • Hieu Nguyen-Van,
  • Thanh Sang To

摘要

This study optimizes the design of ground anchor systems to reinforce slopes in the red basaltic soil region of DaLat, Vietnam, addressing the critical risk of landslides. The Finite Element Method (FEM) and the Shear Strength Reduction (SSR) technisque are employed to investigate the effects of anchor spacing and inclination angles on the stability of slopes with varying gradients. The present findings indicate that the Factor of Safety (FoS) increases significantly as anchor spacing decreases. To achieve high reinforcement efficiency, it is recommended to prioritize spacing configurations not exceeding 4 m. The optimal inclination angle \(\alpha\) is determined to depend directly on the slope gradient: for steeper slopes with gradients not exceeding 1H:1.5V, inclination angles ranging from 30° to 40° are recommended, whereas for gentler slopes with gradients of 1H:2V and above, higher inclination angles ranging from 40° to 45° are preferred.