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Numerical Simulations of the Mechanical Contribution of the Plant Roots to Slope Stability

  • Barbara Maria SwitalaEmail author
  • Wei Wu
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

Soil bioengineering methods in slope stabilisation are becoming more and more popular, when ecological solutions are desirable. Simple, numerical models were created in order to assess the mechanical contribution of the roots reinforcement to slope stability. Two- and three-dimensional analyses were conducted for different geometries of root architectures and different soil conditions. Obtained values of a factor of safety (FOS) are compared and discussed. From these data, it is possible to determine, which root reinforcement cases have the greatest impact on the stability of the slope.

Keywords

slope stability root reinforcement factor of safety slip surface bioengineering methods 

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References

  1. 1.
    Ali, N., Farshchi, I., Mu’azu, M.A., Rees, S.W.: Soil-Root Interaction and Effects on Slope Stability Analysis. Electronic Journal of Geotechnical Engineers 17, 319–328 (2012)Google Scholar
  2. 2.
    Comino, E., Druetta, A.: In situ Shear Tests of Soil Samples with Grass Roots in Alpine Environment. American Journal of Environmental Sciences 5(4), 475–486 (2009)CrossRefGoogle Scholar
  3. 3.
    Fan, C.C., Su, C.F.: Role of roots in the shear strength of root-reinforced soils with high moisture content. Ecological Engineering 33, 157–166 (2008)CrossRefGoogle Scholar
  4. 4.
    Itasca Consulting Group: FLAC 3D Version 3.0 User’s Guide, Minneapolis (2005)Google Scholar
  5. 5.
    Kokutse, N., Fourcaud, T., Kokou, K., Lac, P.: 3D Numerical Modelling and Analysis of the Influence of Forest Structure on Hill Slopes Stability. In: Proceedings to the INTERPRAEVENT International Symposium Disaster Mitigation of Debris Flows, Slope Failures and Lanslides, Niigata, Japan, pp. 561–567 (2006)Google Scholar
  6. 6.
    Köstler, J.N., Brückner, E., Bibelriether, H.: Die Wurzeln der Waldbäume. Untersuchungen zur Morphologie der Waldbäume in Mitteleuropa. P.Parey, Hamburg (1968)Google Scholar
  7. 7.
    Mickovski, S.B., Stokes, A., van Beek, R., Ghestem, M., Fourcaud, T.: Simulation of direct shear tests on rooted and non-rooted soil using finite element analysis. Ecological Engineering 37, 1523–1532 (2011)CrossRefGoogle Scholar
  8. 8.
    Schwarz, M., Lehmann, P., Or, D.: Quantifying lateral root reinforcement in steep slopes-from a bundle of roots to tree stands. Earth Surface Processes and Landforms 35, 354–367 (2010)CrossRefGoogle Scholar
  9. 9.
    Stokes, A., Atger, C., Bengough, A.G., Fourcaud, T., Sidle, R.C.: Desirable plant root traits for protecting natural and engineered slopes against landslides. Plant Soil 324, 1–30 (2009)CrossRefGoogle Scholar
  10. 10.
    Thomas, R., Pollen-Bankhead, N.: Modelling root-reinforcement with a fiber-bundle model and Monte Carlo simulation. Ecological Engineering 36, 47–61 (2010)CrossRefGoogle Scholar
  11. 11.
    Tiwari, R.C., Bhandary, N.P., Yatabe, R., Bhat, D.R.: New Numerical scheme in the finite-element method for evaluating the root-reinforcement effect on slope stability. Geotechnique 63, 129–139 (2013)CrossRefGoogle Scholar
  12. 12.
    Waldron, L.J., Dakessian, S.: Soil reinforcement by roots, calculation of increased soil shear resistance from root properties. Soil Science 132(6), 427–435 (1981)CrossRefGoogle Scholar
  13. 13.
    Wan, Y., Xue, Q., Zhao, Y.: Mechanism Study and Numerical Simulation on Vegetation Affecting the Slope Stability. Electronic Journal of Geotechnical Engineers 16, 741–751 (2011)Google Scholar
  14. 14.
    Wilkinson, P.L., Anderson, M.G., Lloyd, D.M.: An integrated hydrological model for rain-induced landslide prediction. Earth Surface Processes and Landforms 27, 1285–1297 (2002)CrossRefGoogle Scholar
  15. 15.
    Wilkinson, P.L., Anderson, M.G., Lloyd, D.M., Renaud, J.: Landslide hazard and bioengineering: towards providing improved decision support through integrated numerical model development. Environmental Modeling & Software 17, 333–344 (2002)CrossRefGoogle Scholar
  16. 16.
    Wu, T.H.: Investigation of landslides on Prince of Wales Island, Alaska. Geotechnical Engr. Report N°5, Dept. of Civil Engr. Ohio State University, p. 94. Columbus (1976)Google Scholar
  17. 17.
    Wu, T.H., McKinell, W.P., Swantson, D.N.: Strength of tree roots and landlides on Prince of Wales Island, Alaska. Canadian Geotechnical Journal 16, 19–33 (1979)CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Institut für GeotechnikUniversität für BodenkulturViennaAustria

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