Document Type : Case Study


1 Civil Engineering Department, NIT Hamirpur, Himachal Pradesh, India

2 Civil Engineering Department, NIT Hamirpur, Himachal Pradesh, India.


The Himalayan mountain range is susceptible to slope instability in numerous areas due to its complicated topography, because of the existing natural conditions and human influence and intervenes. National Highway-05 is considered in this work. The area under investigation located in Rampur, district Shimla, Himachal Pradesh is evaluated for slope stability. The primary purpose of this work is to maintain the slope's stability in order to protect NH-05 and the neighboring three-sided residential structures. Following the site visit, the geotechnical investigations in the form of bore holes and laboratory tests are conducted. Analysis of slope stability is commenced after interpreting the geotechnical study report. For an analytic slope stability, the studied area is divided into three sections, labelled A1-A1', B1-B1', and C1-C1'. Taking into account the geotechnical aspects of the specified research region, the mitigation design parameters for the area and the circular slip failure are calculated using the numerical modeling techniques. The software computes the safety factor for both the static and dynamic situations. As a result, preventative measures and a few improvements are suggested.


[1]. Sarkar, K., Singh, T.N., and Verma, A.K. (2010). A numerical simulation of landslide-prone slope in Himalayan region—a case study. Arab J Geosci 5 (1): 73–81.
[2]. Sah, N., Kumar, M., Upadhyay, R., and Dutt, S. (2018). Hill slope instability of Nainital City, Kumaun Lesser Himalaya, Uttarakhand, India. Journal of rock mechanics and geotechnical engineering. 10 (2): 280-289.
[3]. Song, D., Che, A., Zhu, R., and Ge, X. (2019). Natural frequency characteristics of rock masses containing a complex geological structure and their effects on the dynamic stability of slopes. Rock Mechanics and Rock Engineering. 52 (11): 4457-4473.
[4]. Singh, K., and Kumar, V. (2020). Road-cut Slope Stability Assessment along Himalayan National Highway NH-154A, India. Journal of the Geological Society of India. 96 (5): 491-498.
[5]. Siddique, T., Alam, M.M., Mondal, M.E.A., and Vishal, V. (2015). Slope mass rating and kinematic analysis of slopes along the national highway-58 near Jonk, Rishikesh, India. Journal of Rock Mechanics and Geotechnical Engineering. 7 (5): 600-606.
[6]. Latha, G.M., and Garaga, A. (2010). Seismic stability analysis of a Himalayan rock slope. Rock Mechanics and Rock Engineering. 43 (6): 831-843.
[7]. Singh, A.K., Kundu, J., and Sarkar, K. (2018). Stability analysis of a recurring soil slope failure along NH-5, Himachal Himalaya, India. Natural Hazards. 90 (2): 863-885.
[8]. Kelesoglu, M.K. (2016). The evaluation of three-dimensional effects on slope stability by the strength reduction method. KSCE Journal of Civil Engineering. 20 (1): 229-242.
[9]. Shooshpasha, I., Amirdehi, H.A., and Kharun, M. (2020). Factors influencing the critical piles length in reinforced slope. In Journal of Physics: Conference Series (Vol. 1687, No. 1, p. 012018). IOP Publishing.
[10]. Kadakci Koca, T., and Koca, M.Y. (2020). Comparative analyses of finite element and limit-equilibrium methods for heavily fractured rock slopes. Journal of Earth System Science. 129 (1): 1-13.
[11]. Kumar, A., Sharma, R.K., and Mehta, B.S. (2020). Slope stability analysis and mitigation measures for selected landslide sites along NH-205 in Himachal Pradesh, India. Journal of Earth System Science. 129 (1): 1-14.
[12]. Yegian, M.K., and Kavazanjian, E. (2004). Geotechnical Engineering for Transportation Projects. American Society of Civil Engineers.
[13]. TOLUN, M., Buse, Ü.N., EMİRLER, B., and YILDIZ, A. (2021). Stability Analyses of a Slope Reinforced with Piles Subjected to Static and Dynamic Loading Conditions. El-Cezeri. 8 (3): 1360-1371.
[14]. Koushik, P., Shantanu, S., Manojit, S., and Mahesh, S. (2016, November). Stability analysis and design of slope reinforcement techniques for a Himalayan landslide. In Recent Advances in Rock Engineering (RARE 2016) (pp. 97-104). Atlantis Press.
[15]. Li, X., He, S., Luo, Y., and Wu, Y. (2011). Numerical studies of the position of piles in slope stabilization. Geomechanics and Geoengineering. 6 (3): 209-215.
[16]. Bureau of Indian Standards New Delhi. Criteria for Earthquake Resistant Design of Structures - General Provisions and Buildings Part-1. Bur. Indian Stand. New Delhi, Vol. Part 1, No. 1, pp. 1–39, 2002.
[17]. IS14243-2. Guidelines for selection and development of site for building in hill areas, Part 2: Selection and development. Bur. Indian Stand. N.Delhi, India, 1995.
[18]. Liu, Y., and Glass, G. (2013). Effects of Mesh Density on Finite Element Analysis 2013-01-1375.
[19]. Acharyya, R., and Dey, A. (2017). Finite element investigation of the bearing capacity of square footings resting on sloping ground. INAE Letters. 2 (3): 97-105.