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<p>Using geological and geotechnical features of rock slope sections, a stability analysis was conducted along the NH-154A Chamba-Bharmour road corridor. The failure mechanism in rock masses was identified employing kinematic analysis based on Markland’s test, and the factor of safety (FOS) for planar and wedge failures was determined utilizing the method outlined by Hoek and Bray. The input parameters, such as joint orientations for stereonet plotting, have been recorded and rock samples have been collected in the field. Six of the fourteen possibly unstable rock slopes along the NH-154A have been considered for the study. The criteria for plane failure are met by the unstable rock slope portions R1, R8, R14, R12 and R13, while the criteria for wedge failure are met by the sections R8, R10, R11, R12 and R13. Failure on a plane FOS was discovered to be lower than one at two different locations, while the lower limit of FOS was confirmed to be around 1.0 and 1.2 at the remaining two locations. One site failure on the plane was deemed to have a FOS larger than 2. There were five locations where wedge failures were discovered, and all of them had FOS values higher than 1. Critical rock cut slopes have had site-specific mitigation and control techniques developed.</p>

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Slope stability assessment along Indian Himalayan National Highway

  • 期刊论文

  • 发表日期：

    2026年2月9日

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  • Kanwarpreet Singh,
  • Shamshad Alam,
  • Abhishek Sharma,
  • Rupesh Gupta,
  • Ankush Mehta,
  • Shivani Guleria

摘要

Using geological and geotechnical features of rock slope sections, a stability analysis was conducted along the NH-154A Chamba-Bharmour road corridor. The failure mechanism in rock masses was identified employing kinematic analysis based on Markland’s test, and the factor of safety (FOS) for planar and wedge failures was determined utilizing the method outlined by Hoek and Bray. The input parameters, such as joint orientations for stereonet plotting, have been recorded and rock samples have been collected in the field. Six of the fourteen possibly unstable rock slopes along the NH-154A have been considered for the study. The criteria for plane failure are met by the unstable rock slope portions R1, R8, R14, R12 and R13, while the criteria for wedge failure are met by the sections R8, R10, R11, R12 and R13. Failure on a plane FOS was discovered to be lower than one at two different locations, while the lower limit of FOS was confirmed to be around 1.0 and 1.2 at the remaining two locations. One site failure on the plane was deemed to have a FOS larger than 2. There were five locations where wedge failures were discovered, and all of them had FOS values higher than 1. Critical rock cut slopes have had site-specific mitigation and control techniques developed.