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Slope stability assessment of the recent Birik Dara landslide in the Kalimpong region of Darjeeling Himalaya, India


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1 Academy of Scientific and Innovative Research, Ghaziabad 201 002, India; CSIR-Central Building Research Institute, Roorkee 247 667, India, India
 

The Birik Dara landslide occurred at around 10 pm local time (GMT+5:30) on 20 October 2021 on National Highway-10 in the Kalimpong region of Darjeeling Himalaya, India, and disrupted traffic for more than a week. This study presents an overview of the landslide and reveals the present stability status of the slope. The slope stability assessment was carried out using data collected from the field during a site visit in the second week of November 2021. The findings of this study indi­cate that the landslide occurred on a critically unstable slope and it may be triggered again in the near future with more damage. Therefore, immediate attention is required regarding slope stabilization measures to avoid future threats
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  • Cruden, D. and Varnes, D., Landslide types and processes. In Landslides: Investigation and Mitigation. Special Report 247, National Research Council. Transportation Research Board, Washington, DC, USA, 1996.
  • Acharyya, S. K., Structural framework and tectonic evolution of the eastern Himalaya. Himalayan Geol., 1980, 10, 412–439.
  • Goel, R. K. and Subhash, M., Importance of weathering in rock engineering. In International Conference on Engineering Geology in New Millennium, Indian Institute of Technology Delhi, New Delhi, 2015, pp. 231–245.
  • Hoek, E. and Bray, J. D., Rock Slope Engineering, CRC Press, 1981, pp. 36–38.
  • Bieniawski, Z. T., The geomechanics classification in rock engineering applications. In 4th ISRM Congress, Onepetro, 1979.
  • Palmstrom, A., Measurements of and correlations between block size and rock quality designation (RQD). Tunnel. Underg. Space Technol., 2005, 20(4), 362–377.
  • Romana, M., New adjustment ratings for application of Bieniawski classification to slopes. In Proceedings of the International Symposium on Role of Rock Mechanics, Zacatecas, Mexico, 1985, pp. 49–53.
  • Sarkar, S., Pandit, K., Sharma, M. and Pippal, A., Risk assessment and stability analysis of a recent landslide at Vishnuprayag on the Rishikesh–Badrinath highway, Uttarakhand, India. Curr. Sci., 2018, 114(7), 1527–1533.
  • Hoek, E. and Brown, E. T., Practical estimates of rock mass strength. Int. J. Rock. Mech. Min., 1997, 34(8), 1165–1186.
  • Sonmez, H. and Ulusay, R., A discussion on the Hoek–Brown failure criterion and suggested modifications to the criterion verified by slope stability case studies. Yerbilimleri, 2002, 26, 77–99.
  • Das, S., Sarkar, S. and Kanungo, D. P., GIS-based landslide susceptibility zonation mapping using the analytic hierarchy process (AHP) method in parts of Kalimpong Region of Darjeeling Himalaya. Environ. Monit. Assess., 2022, 194(3), 1–28.

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  • Slope stability assessment of the recent Birik Dara landslide in the Kalimpong region of Darjeeling Himalaya, India

Abstract Views: 294  |  PDF Views: 111

Authors

Suvam Das
Academy of Scientific and Innovative Research, Ghaziabad 201 002, India; CSIR-Central Building Research Institute, Roorkee 247 667, India, India
Prachi Chandna
Academy of Scientific and Innovative Research, Ghaziabad 201 002, India; CSIR-Central Building Research Institute, Roorkee 247 667, India, India
Shantanu Sarkar
Academy of Scientific and Innovative Research, Ghaziabad 201 002, India; CSIR-Central Building Research Institute, Roorkee 247 667, India, India
Debi Prasanna Kanungo
Academy of Scientific and Innovative Research, Ghaziabad 201 002, India; CSIR-Central Building Research Institute, Roorkee 247 667, India, India

Abstract


The Birik Dara landslide occurred at around 10 pm local time (GMT+5:30) on 20 October 2021 on National Highway-10 in the Kalimpong region of Darjeeling Himalaya, India, and disrupted traffic for more than a week. This study presents an overview of the landslide and reveals the present stability status of the slope. The slope stability assessment was carried out using data collected from the field during a site visit in the second week of November 2021. The findings of this study indi­cate that the landslide occurred on a critically unstable slope and it may be triggered again in the near future with more damage. Therefore, immediate attention is required regarding slope stabilization measures to avoid future threats

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DOI: https://doi.org/10.18520/cs%2Fv123%2Fi7%2F928-933