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<p>The stabilisation of landslide-prone areas in Indonesia remains inadequate due to the prevalence of landslide-susceptible locations and insufficient funding. Conversely, the frequency of landslide occurrences has been steadily increasing over time due to climate change. The exploration of alternative materials should be conducted to address this issue. This study recommends utilising a combination of waste tyres and vetiver (WTV) to improve slope stability in landslides-hazardous area. To obtain the research aim, a full-scale reinforced slope model was constructed in the field, measuring 20 m in length and 2 m in height. That model was divided into two zones i.e., WTV and waste tyre solely reinforcement systems (WTY) for comparative analysis. Moreover, detailed topographic surveys were conducted monthly to observe construction deformation. In addition, a fully coupled numerical simulation was conducted in this study to analyse pore water pressure (PWP) dynamics and deformation. The results indicate that the implementation of both soil reinforcement systems (i.e., WTV and WTY), significantly raise slope stability, substantiated by minor total deformation. The existence of roots in the WTV construction provides additional reinforcement and thus decreases vertical and horizontal deformation as compared to the WTY construction. It can be attributed to the increase in soil cohesion due to vetiver roots, enhancing the soil strength. The numerical simulation results show that vetiver roots can maintain PWP during rainfall events at a lower range value, therefore stabilising soil shear strength. These finding delineate that the utilisation of a waste tyre and vetiver combination has the potential to be an alternative solution to mitigate landslide-susceptible area.</p>

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Stability of Slopes Reinforced with a Combined Waste Tyre and Vetiver System

  • 期刊论文

  • 发表日期：

    2026年2月12日

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  • Arwan Apriyono,
  • Sumiyanto,
  • Sony Pramusandi,
  • Priswanto,
  • Devi Oktaviana Latif,
  • Arde Cahyadi Sukma

摘要

The stabilisation of landslide-prone areas in Indonesia remains inadequate due to the prevalence of landslide-susceptible locations and insufficient funding. Conversely, the frequency of landslide occurrences has been steadily increasing over time due to climate change. The exploration of alternative materials should be conducted to address this issue. This study recommends utilising a combination of waste tyres and vetiver (WTV) to improve slope stability in landslides-hazardous area. To obtain the research aim, a full-scale reinforced slope model was constructed in the field, measuring 20 m in length and 2 m in height. That model was divided into two zones i.e., WTV and waste tyre solely reinforcement systems (WTY) for comparative analysis. Moreover, detailed topographic surveys were conducted monthly to observe construction deformation. In addition, a fully coupled numerical simulation was conducted in this study to analyse pore water pressure (PWP) dynamics and deformation. The results indicate that the implementation of both soil reinforcement systems (i.e., WTV and WTY), significantly raise slope stability, substantiated by minor total deformation. The existence of roots in the WTV construction provides additional reinforcement and thus decreases vertical and horizontal deformation as compared to the WTY construction. It can be attributed to the increase in soil cohesion due to vetiver roots, enhancing the soil strength. The numerical simulation results show that vetiver roots can maintain PWP during rainfall events at a lower range value, therefore stabilising soil shear strength. These finding delineate that the utilisation of a waste tyre and vetiver combination has the potential to be an alternative solution to mitigate landslide-susceptible area.