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<p>Slope stability in sandy soils presents significant engineering challenges, particularly during rainfall which compromises structural integrity. This study investigates the effectiveness of geosynthetic reinforcement for stabilizing a 10-meter-high sandy slope (55° inclination) in the Barkheda region of Bhopal, India. Through comprehensive field investigations across six borehole locations, laboratory testing, and advanced numerical modeling using GeoStudio software, this research provides a comparative analysis of unreinforced and geogrid-reinforced slope configurations. Laboratory analysis revealed varied particle sizes and soil shear strength parameters, with cohesion ranging from 15 to 19&#xa0;kPa and internal friction angles of 18.5°–25.2°. The unreinforced slopes exhibited factors of safety (FOS) between 0.92 and 1.15, significantly below the acceptable threshold of 1.5. Implementation of high-density polyethylene (HDPE) uniaxial geogrid reinforcement, configured with 5-meter lengths at 1-m vertical spacing, resulted in a remarkable average FOS increase of 62%. The most substantial improvement was observed in the most vulnerable section, where FOS increased from 0.92 to 1.68, representing an 82.6% enhancement. These findings demonstrate the significant efficacy of geogrid reinforcement in sandy slopes and provide valuable design insights for similar geological settings, particularly in regions prone to rainfall-induced instability.</p>

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Stability Analysis of Geogrid Reinforced Slope Using GeoStudio

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Vedant Shukla,
  • Hasthi Venkateswarlu,
  • Nitin Dindorkar

摘要

Slope stability in sandy soils presents significant engineering challenges, particularly during rainfall which compromises structural integrity. This study investigates the effectiveness of geosynthetic reinforcement for stabilizing a 10-meter-high sandy slope (55° inclination) in the Barkheda region of Bhopal, India. Through comprehensive field investigations across six borehole locations, laboratory testing, and advanced numerical modeling using GeoStudio software, this research provides a comparative analysis of unreinforced and geogrid-reinforced slope configurations. Laboratory analysis revealed varied particle sizes and soil shear strength parameters, with cohesion ranging from 15 to 19 kPa and internal friction angles of 18.5°–25.2°. The unreinforced slopes exhibited factors of safety (FOS) between 0.92 and 1.15, significantly below the acceptable threshold of 1.5. Implementation of high-density polyethylene (HDPE) uniaxial geogrid reinforcement, configured with 5-meter lengths at 1-m vertical spacing, resulted in a remarkable average FOS increase of 62%. The most substantial improvement was observed in the most vulnerable section, where FOS increased from 0.92 to 1.68, representing an 82.6% enhancement. These findings demonstrate the significant efficacy of geogrid reinforcement in sandy slopes and provide valuable design insights for similar geological settings, particularly in regions prone to rainfall-induced instability.