Numerical Analysis of Soil Slope Stabilization by Soil Nailing Technique

  • D. A. Mangnejo Department of Civil Engineering, Mehran University of Engineering and Technology, Pakistan
  • S. J. Oad Department of Civil Engineering Technology, The Benazir Bhutto Shaheed University of Technology and Skill Development, Pakistan
  • S. A. Kalhoro Department of Civil Engineering, Mehran University of Engineering and Technology, Pakistan
  • S. Ahmed Department of Civil Engineering, Mehran University of Engineering and Technology, Pakistan
  • F. H. Laghari Department of Civil Engineering, Mehran University of Engineering and Technology, Pakistan
  • Z. A Siyal Department of Civil Engineering, Mehran University of Engineering and Technology, Pakistan
Volume: 9 | Issue: 4 | Pages: 4469-4473 | August 2019 | https://doi.org/10.48084/etasr.2859

Abstract

Slope instability may be a result of change in stress conditions, rise in groundwater table and rainfall. Similarly, many slopes that have been stable for several years can abruptly fail due to changes in geometry, weak soil shear strength or as the effect of an external force. Debris flows (i.e. slope failures) take place without any warning and can have devastating results. So, it is vital to understand the slope failure mechanism and adopt safety prevention measures. Soil nailing is one of the widely used stabilization techniques for soil slopes. In this study, soil nail technique is proposed to upgrade the existing slope in clay. A parametric study was conducted to understand the effects of different nail diameter (i.e. 25mm and 40mm) and nail inclination (i.e. 200, 250, 300, 350 and 400) on slope stability. Morgenstern-Price (i.e. limit equilibrium) method was used to determine the factor of safety of the slope. It was found that the factor of safety of the existing slope improved significantly with three rows of 40mm diameter nail at an inclination of 400.

Keywords: slope stability, soil nail technique, nail diameter and inclination

Downloads

Download data is not yet available.

References

P. Ghosh, A. Biswas, “Effect of Reinforcement on Stability of Slopes using GEOSLOPE”, International Conference on Benchmarks in Engineering Science and Technology, Maharashtra, India, September 7-8, 2012

M. A. Hossain, A. Islam, “Numerical analysis of the effects of soil nail on slope stability”, International Journal of Computer Applications, Vol. 141, No. 8, pp. 12-15, 2016 DOI: https://doi.org/10.5120/ijca2016908816

J. Zhang, L. M. Zhang, W. H. Tang. “New methods for system reliability analysis of soil slopes”, Canadian Geotechnical Journal, Vol. 48, No. 7, pp. 1138-1148, 2011 DOI: https://doi.org/10.1139/t11-009

A. Fawaz, E. Farah, F. Hagechehade, “Slope Stability Analysis Using Numerical Modelling”, American Journal of Civil Engineering. Vol. 2, No. 3, pp. 60-67, 2014 DOI: https://doi.org/10.11648/j.ajce.20140203.11

S. Singh, A. K. Shrivastava, “Soil nailing for stability of the slopes”, International Journal for Research in Applied Science & Engineering Technology, Vol. 5, No. 10, pp. 752-763, 2017 DOI: https://doi.org/10.22214/ijraset.2017.10109

S. B. Mickovski, F. M. Lindsay, M. J. Smith. “Construction and testing of self-drilled soil nails”, Proceedings of the Institution of Civil Engineers-Geotechnical Engineering, Vol. 169, No. 6, pp. 541-553, 2016 DOI: https://doi.org/10.1680/jgeen.15.00149

S. H. Jiang, D. Q. Li, L. M. Zhang, C. B. Zhou, “Slope reliability analysis considering spatially variable shear strength parameters using a non-intrusive stochastic finite element method”, Engineering Geology, Vol. 168, pp. 120-128, 2014 DOI: https://doi.org/10.1016/j.enggeo.2013.11.006

X. L. Chen, C. G. Liu, Z. F. Chang, Q. Zhou, “The relationship between the slope angle and the landslide size derived from limit equilibrium simulations”, Geomorphology, Vol. 253, pp. 547-550, 2016 DOI: https://doi.org/10.1016/j.geomorph.2015.01.036

K. Lim, A. J. Li, A. V. Lyamin, “Three-dimensional slope stability assessment of two-layered undrained clay”, Computers and Geotechnics, Vol. 70, pp. 1-17, 2015 DOI: https://doi.org/10.1016/j.compgeo.2015.07.011

X. Zhou, J. Li, Z. Liu, Y, Tang, “Analysis of slope stability with imprecise soil properties using uncertain sets”, Mathematical Problems in Engineering, Vol. 2019, Article ID 1062347, 2019 DOI: https://doi.org/10.1155/2019/1062347

Q. Zhan, X. Sun, C. Li, Y. Zhao, X. Zhou, Y. He, Y. Zhang, “Stability analysis and reinforcement of a high-steep rock slope with faults: numerical analysis and field monitoring”, Advances in Civil Engineering, Vol. 2019, Article ID 3732982, 2019 DOI: https://doi.org/10.1155/2019/3732982

Metrics

Abstract Views: 440
PDF Downloads: 194

Metrics Information
Bookmark and Share

Most read articles by the same author(s)