Abstract
Slope failure is very common phenomenon in hilly regions, especially in young techno active mountainous like Himalayas. It is hazardous because of the accompanying progressive movement of the slope-forming material. In order to minimize the landslide effects, slope failure analysis and stabilization requires in depth understanding of the process that governs the behavior of the slope. The present article mainly deals with the analysis of the stability of road cut slopes of Rudraprayag Area, Uttarakhand, India. The area experiences local as well as regional slides every year. Extensive field study was carried out along the road cut slopes. Laboratory experiments were conducted to determine the various Physio-mechanical properties of rock mass. These properties have been used as input parameters for the numerical simulation of slope using FLAC3D (Fast Lagrangian Analysis of Continua) including geological discontinuities. The computed deformations and the stress distribution along the failure surface are compared with the field observations. The study indicates that the overall slope is unstable except at the location E where slope is critically stable. The effects of instability have been thoroughly considered and remedial measures have been recommended.
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References
Bishop AW (1955) The use of the slip circle in the stability analysis of slopes. Geotechnique 1:7–17
Cundall PA, Strack ODL (1979) A discrete numerical model for granular assemblies. Geotechnique 29:47–65
Duncan JM (1996) State of the art: limit equilibrium and finite-element analysis of slopes. J Geotech Eng 122(7):577–596
Frohlich OK (1955) General theory of stability of slopes. Geotechnique 5:37–47
Griffiths DV, Lane PA (1999) Slope stability analysis by finite elements. Geotechnique 49(3):387–403
Hudson JA, Harrison JP (1997) Engineering rock mechanics: an introduction to the principles. Elsevier Science Publishers, Oxford
ISRM (1972) Suggested method for determining water content, porosity, density, absorption and related properties and swelling and slake durability index properties. Int J Rock Mech Min Sci Geomech Abst 1–12
ISRM (1977) Suggested methods for determining the strength of rock materials in triaxial compression. Int J Rock Mech Min Sci Geomech 15:47–51
ISRM (1981) Rock characterization testing and monitoring, ISRM suggested method. Int Soc Rock Mech 211
Janbu N (1954) Application of composite slip surfaces for stability analysis. Proceedings of European conference on stability of earth slopes, vol 3, pp 43–49
Janbu N (1957) Earth pressure and bearing capacity by generalized procedure of slices. Proceedings of the fourth international conference on soil mechanics, vol 2, pp 207–212
Spencer E (1967) A method of analysis of the stability of embankments assuming parallel interslice forces. Geotechnique 17(1):11–26
Sung OC, Chung SK (2005) Stability analysis of jointed rock slopes using the Barton–Bandis constitutive model in UDEC. Int J Rock Mech Min Sci 41:469
Wang C, Tannant DD, Lilly PA (2003) Numerical analysis of the stability of heavily jointed rock slopes using PFC2D. Int J Rock Mech Min Sci 40:415–424 (Elsevier Publishers)
Zheng H, Liu DF, Li CG (2005) Slope stability analysis based on elasto-plastic finite element method. Int J Numer Methods Eng 64:1871–1888
Acknowledgement
The investigation was financially and technically supported by Division of Science and Technology (DST), New Delhi, India during the research period for this project, for which the authors express their appreciation.
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Singh, T.N., Gulati, A., Dontha, L. et al. Evaluating cut slope failure by numerical analysis—a case study. Nat Hazards 47, 263–279 (2008). https://doi.org/10.1007/s11069-008-9219-5
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DOI: https://doi.org/10.1007/s11069-008-9219-5