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<p>The dynamic and diverse characteristics of the environment present significant challenges in predicting natural disasters. These challenges are further intensified by human activities, including constructing roads, dams, and tunnels, and developing hydropower projects in mountainous regions, in conjunction with the effects of changing climate conditions. Therefore, slope stability is crucial for sustainable mining, civil engineering, and urban development. This study assesses the stability of road-cut slopes along the Balipara–Charduar–Tawang (BCT) Road in Arunachal Pradesh, India. A topographical survey and electrical resistivity tomography were conducted on two slopes primarily composed of sandy silt. Below 7–10&#xa0;m of overburden soil, rock was discovered with uniaxial compressive strength between 20 and 25&#xa0;MPa and point load index values from 0.8 to 1.0&#xa0;MPa. Various geotechnical tests, such as direct shear, particle size analyses, rock hardness, and Atterberg limits, have been performed to evaluate slope materials’ strength. Limit Equilibrium Method (LEM) has been used for slope stability analysis. It determined that both slope’s factors of safety (FoS) are below unity due to the steep slopes along the BCT road, and their values of 56+300&#xa0;km and 57+800&#xa0;km chainages are 0.67, 0.94 for static and 0.50, 0.70 for seismic cases. Soil nails are primarily recommended for stabilization, in addition to gabion walls, synthetic geomats, rock barriers, and consolidation units. After implementing mitigation measures, FoS was computed, indicating that both slopes lie in the stable class. This study gives a better understanding of slope instability and measures focus on slope stabilization, erosion control, and drainage solutions.</p>

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Slope stability assessment of the section along Balipara–Charduar–Tawang Road, Arunachal Pradesh, India

  • 期刊论文

  • 发表日期：

    2025年6月23日

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  • Deepak Kumar Singh,
  • Amit Kumar Verma,
  • Rahul Kumar Verma,
  • T N Singh

摘要

The dynamic and diverse characteristics of the environment present significant challenges in predicting natural disasters. These challenges are further intensified by human activities, including constructing roads, dams, and tunnels, and developing hydropower projects in mountainous regions, in conjunction with the effects of changing climate conditions. Therefore, slope stability is crucial for sustainable mining, civil engineering, and urban development. This study assesses the stability of road-cut slopes along the Balipara–Charduar–Tawang (BCT) Road in Arunachal Pradesh, India. A topographical survey and electrical resistivity tomography were conducted on two slopes primarily composed of sandy silt. Below 7–10 m of overburden soil, rock was discovered with uniaxial compressive strength between 20 and 25 MPa and point load index values from 0.8 to 1.0 MPa. Various geotechnical tests, such as direct shear, particle size analyses, rock hardness, and Atterberg limits, have been performed to evaluate slope materials’ strength. Limit Equilibrium Method (LEM) has been used for slope stability analysis. It determined that both slope’s factors of safety (FoS) are below unity due to the steep slopes along the BCT road, and their values of 56+300 km and 57+800 km chainages are 0.67, 0.94 for static and 0.50, 0.70 for seismic cases. Soil nails are primarily recommended for stabilization, in addition to gabion walls, synthetic geomats, rock barriers, and consolidation units. After implementing mitigation measures, FoS was computed, indicating that both slopes lie in the stable class. This study gives a better understanding of slope instability and measures focus on slope stabilization, erosion control, and drainage solutions.