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Study and Remedy of Kotropi Landslide in Himachal Pradesh, India

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Abstract

A debris flow type of landslide is believed to have propagated from existing minor landslides and heavy rainfall on August 13, 2017, near the village of Kotropi (Mandi District, Himachal Pradesh), India. The disastrous landslide swept away two state transport buses causing 47 fatalities. A stretch of 300-m on National Highway-154 was completely buried under debris by a massive 1153 m of slope run-out extending over 190 m of slope width. The present research work aims at mitigation of Kotropi slope failure using helical soil nails. The preliminary study involves geotechnical and chemical testing of Kotropi soil. With favorable prevailing soil conditions, helical soil nails with length of 6 m and diameter 20 mm are used for stabilizing the failed slope. The stability of helical soil-nailed slope is determined by calculating factor of safety using limit equilibrium method which is also validated by numerical modeling using finite element subroutine PLAXIS 2D. A factor of safety of 1.54 is achieved by calculations in comparison with 1.67 from numerical modeling. Moreover, a decrease in maximum horizontal slope deformation is also achieved from 0.13 to 0.06 m.

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Modified after FSI, [3] and Sharma et al. [15]

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Modified after FSI [3] and FHWA [14]

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References

  1. Kanwar Y (2017) 46 killed as massive landslip buries vehicles in Himachal Pradesh. https://www.thehindu.com/news/national/other-states/many-killed-as-cloudburst-triggers-landslip-in-himachal-pradesh/article19485223.ece. Accessed 14 Aug 2017

  2. Kumar J (2017) 46 dead as landslide buries two buses in Mandi, rescue ops to resume tomorrowhttps://www.tribuneindia.com/news/himachal/46-dead-as-landslide-buries-two-buses-in-mandi-rescue-ops-to-resume-tomorrow/451552.html. Accessed 14 Aug 2017

  3. FSI Technical Manual (2014) Helical piles and anchors, hydraulically driven push piers, polyurethane injection, supplemental support systems, 2nd edn. Foundation Supportworks@ Inc, Omaha

    Google Scholar 

  4. Yang MZ, Drumm EC (2000) Numerical analysis of the load transfer and deformation in a soil nailed slope. In: Filz GM, Griffiths DV (eds) Numerical methods in geotechnical engineering. Proceedings of sessions of Geo-Denver 2000, Sponsored by the Geo-Institute of ASCE, Denver, Colorado, pp 102–115. https://doi.org/10.1061/40502(284)8

  5. Geoguide 7 (2008) Guide to soil nail design and construction. Geotechnical Engineering Office, Civil Engineering and Development Department, The Government of the Hong Kong Special Administrative Region

  6. Soga K, Alonso E, Yerro A, Kumar K, Bandara S (2015) Trends in large-deformation analysis of landslide mass movements with particular emphasis on the material point method. Géotechnique 66(3):248–273

    Article  Google Scholar 

  7. Talukdar P, Bora R, Dey A (2018) Numerical investigation of hill slope instability due to seepage and anthropogenic activities. Indian Geotech J 48(3):585–594. https://doi.org/10.1007/s40098-017-0272-4

    Article  Google Scholar 

  8. Singh VP, Babu GS (2010) 2D numerical simulations of soil nails walls. Geotech Geol Eng 28:299–309

    Article  Google Scholar 

  9. Babu GS, Singh VP (2009) Simulation of soil nail structures using PLAXIS 2D. PLAXIS Bull 25:16–21

    Google Scholar 

  10. Tiwari G, Gali M (2017) Reliability analysis of a himalayan rock slope considering uncertainty in post peak strength parameters. Geotechnical Special Publication, pp 83–192

  11. Shiu Y, Chang G (2006) Effects of inclination, length pattern and bending stiffness of soil nails on behavior of nailed structures GEO Report No. 197. Geotechnical Engineering Office, Hong Kong

  12. Fan CC, Luo JH (2008) Numerical study on the optimum layout of soil nailed slopes. Comput Geotech 35(4):585–599

    Article  Google Scholar 

  13. Deardorff D, Moeller M, Walt E (2010) Results of an instrumented helical soil nail wall. In: Earth retention conference, ASCE, pp 262–269

  14. FHWA (2015) soil nail walls reference manual. Publication No. Federal Highway Administration (FHWA)—NHI-14-007, US Department of Transportation Federal Highway Administration

  15. Sharma M, Samanta M, Sarkar S (2017) A laboratory study on pullout capacity of helical soil nail in cohesionless soil. Can Geotech J 54(10):1482–1495

    Article  Google Scholar 

  16. ISRO (2015) Version-2 Kotropi landslide, Mandi district, Himachal Pradesh (a preliminary report) National remote sensing center, ISRO Hyderabad

  17. Sassa K (1985) The mechanism of debris flows. In: Proceedings, 11th international conference on soil mechanics and foundation engineering, San Francisco, vol 1, pp 1173–1176

  18. Hungr O, Leroueil S, Picarelli L (2013) The Varnes classification of landslide types, an update. Landslides 11:167–194

    Article  Google Scholar 

  19. Sarkar R, Kurar R, Zangmo S, Dema UG, Subba SJ, Sharma DK (2017) Application of soil nailing for landslide mitigation in Bhutan: a case study at Sorchen Bypass. Electron J Geotech Eng 22(13):4963–4980

    Google Scholar 

  20. PH and HP State Unit, Chandigarh (2017) Report on preliminary assessment of the landslide, team of GSI office. https://employee.gsi.gov.in/cs/groups/public/documents/document/b3zp/mtyx/~edisp/dcport1gsigovi161798.pdf. Accessed 1 Nov 2017

  21. IS: code 14680:1999 (1999) Landslide control guidelines. Bureau of Indian Standard (BIS), New Delhi

    Google Scholar 

  22. IS: 2720 – 4 (1985) Grain size analysis. Bureau of Indian Standard (BIS), New Delhi

    Google Scholar 

  23. IS: 2720 – 5 (1985) Atterberg limit test. Bureau of Indian Standard (BIS), New Delhi

    Google Scholar 

  24. IS: 2720 - 7 (1983) Methods of test for soils: determination of water content—dry density relation using light compaction. Bureau of Indian Standard (BIS), New Delhi

    Google Scholar 

  25. IS: 2720 - 11 (1991) Methods of test for soils: determination of shear strength parameters by unconsolidated undrained triaxial compression without measurement of pore water pressure. Bureau of Indian Standard (BIS), New Delhi

    Google Scholar 

  26. Hubble Power Systems Inc (2015) Screw nailing retention earth structures, design manual. CHANCE USA

  27. AASHTO (2007) Standard method of test for determining water-soluble sulfate ion content in soil. Standard by American Association of State and Highway Transportation Officials, T 290–295

  28. AASHTO (1994) Standard method of test for determining water-soluble chloride ion content in soil. Standard by American Association of State and Highway Transportation Officials, T 291

  29. Rawat S, Gupta AK (2016) Analysis of nailed soil slope using limit equilibrium and finite element methods. Int J Geosynth Ground Eng 2(4):34

    Article  Google Scholar 

  30. Snitbhan N, Chen WF (1978) Elastic–plastic large deformation analysis of soil slopes. Comput Struct 9(6):567–577. https://doi.org/10.1016/0045-7949(78)90006-8

    Article  MATH  Google Scholar 

  31. Rawat S, Gupta AK (2017) Testing and modeling of screw nailed soil slopes. Indian Geotech J 48(1):52–71

    Article  Google Scholar 

  32. Brinkgreve RBJ, Engin E, Swolfs WM (2012) Plaxis 2D 2012 Manual Plaxis bv, The Netherlands

  33. Rawat S (2017) Testing and Modeling of soil–nailed slopes. Ph.D. Thesis, Jaypee University of Information Technology, Waknaghat, Solan, Himachal Pradesh, India

  34. Kulczykawski MP, Jaraslaw K, Boguslaw (2017) Application of soil nailing technique for protection and preservation Historical building. IOP conference series: materials science & engineering, vol 245. https://doi.org/10.1088/1757-899X/245/2/022055

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Civil Engineering, Jaypee University of Information Technology, Waknaghat, Solan, Himachal Pradesh, 173234, India

    Pankaj Sharma, Saurabh Rawat & Ashok Kumar Gupta

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  1. Pankaj Sharma
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  2. Saurabh Rawat
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  3. Ashok Kumar Gupta
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Correspondence to Saurabh Rawat.

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Sharma, P., Rawat, S. & Gupta, A.K. Study and Remedy of Kotropi Landslide in Himachal Pradesh, India. Indian Geotech J 49, 603–619 (2019). https://doi.org/10.1007/s40098-018-0343-1

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