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http://dx.doi.org/10.7843/kgs.2014.30.10.5

Study on the Characteristics of Infinite Slope Failures by Probabilistic Seepage Analysis  

Cho, Sung-Eun (Dept. of Civil, Safety, and Environmental Engrg., Hankyong National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.30, no.10, 2014 , pp. 5-18 More about this Journal
Abstract
Many regions around the world are vulnerable to rainfall-induced slope failures. A variety of methods have been proposed for revealing the mechanism of slope failure initiation. Current analysis methods, however, do not consider the effects of non-homogeneous soil profiles and variable hydraulic responses on rainfall-induced slope failures. In this study, probabilistic stability analyses were conducted for weathered residual soil slopes with different soil thickness overlying impermeable bedrock to study the rainfall-induced failure mechanisms depending on the soil thickness. A series of seepage and stability analyses of an infinite slope based on one-dimensional random fields were performed to consider the effects of uncertainty due to the spatial heterogeneity of hydraulic conductivity on the failure of unsaturated slopes due to rainfall infiltration. The results showed that a probabilistic framework can be used to efficiently consider various failure patterns caused by spatial variability of hydraulic conductivity in rainfall infiltration assessment for a infinite slope.
Keywords
Rainfall infiltration; Monte Carlo Simulation; Probability; Random field; Infinite slope; Hydraulic conductivity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Kim, Y. K. (2003), Permeability of unsaturated weathered soils by analyzing triaxial permeameter test results, Master thesis, KAIST.
2 Gui, S., Zhang, R., Turner J. P., and Xue, X. (2000), "Probabilistic slope stability analysis with stochastic hydraulic conductivity", Journal of Geotechnical and Geoenvironmental Engineering, Vol.126, No.1, pp.1-9.   DOI   ScienceOn
3 Huber, M., Moellmann, A., Vermeer, P. A., and Bardossy, A. (2009), "Contributions to probabilistic soil modelling", Proceedings of the 7th International Probabilistic Workshop, Delft, pp.1-12.
4 Itasca (2011), User's Manual : Fluid-Mechanical Interaction, FLAC 7.0, Itasca Consulting Group Inc. Minneapolis.
5 Jeon, K. H., Lee, S. R., Yoon, S., and Kim, Y. T. (2013), "Slope stability analysis based on probabilistic characteristics of unsaturated soil properties of weathered granite soil", Journal of KOSHAM, Vol.13, No.1, pp.161-168.   과학기술학회마을   DOI   ScienceOn
6 Lacasse, S. and Nadim, F. (1996), Uncertainties in characterizing soil properties. Uncertainty in the Geologic Environment: From Theory to Practice, In: Shackleford, C. D., Nelson, P. P., Roth, M. J. S. (Eds.), Geotechnical Special Publication No. 58. ASCE, pp.49-75.
7 Li, W. C., Lee, L. M., Cai, H., Li, H. J., Dai, F. C., and Wang, M. L. (2013), "Combined roles of saturated permeability and rainfall characteristics on surficial failure of homogeneous soil slope", Engineering Geology, Vol.153, pp.105-113.   DOI
8 Lu, N. and Likos, W. J. (2006), "Suction stress characteristic curve for unsaturated soil", Journal of Geotechnical and Geoenvironmental Engineering, Vol.132, No.2, pp.131-142.   DOI   ScienceOn
9 Lu, N. and Godt, J. (2008), "Infinite slope stability under steady unsaturated seepage conditions", Water Resources Research, Vol.44, No.11, W11404.
10 Lu, N. and Godt, J. (2013), Hillslope Hydrology and Stability, Cambridge University Press, New York.
11 Ng, C. W. W. and Shi, Q. A. (1998), "A numerical investigation of the stability of unsaturated soil slopes subjected to transient seepage", Computer and Geotechnics, Vol.22, No.1, pp.1-28.   DOI   ScienceOn
12 Ray, R., Jacobs, J., and de Alba, P. (2010), "Impacts of unsaturated zone soil moisture and groundwater table on slope instability", Journal of Geotechnical and Geoenvironmental Engineering, Vol.136, No.10, pp.1448-1458.   DOI
13 Santoso, A. M., Phoon, K. K., and Quek, S. T. (2011), "Effects of soil spatial variability on rainfall-induced landslides", Computers and Structures, Vol.89, No.11-12, pp.893-900.   DOI
14 Zhang, L. L., Fredlund, D. G., Zhang, L. M., and Tang, W. H. (2004), "Numerical study of soil conditions under which matric suction can be maintained", Canadian Geotechnical Journal, Vol.41, No.4, pp.569-582.   DOI
15 Srivastava, A., Sivakumar Babu, G. L., and Haldar, S. (2010), "Influence of spatial variability of permeability property on steady state seepage flow and slope stability analysis", Engineering Geology, Vol.110, No.3-4, pp.93-101.   DOI
16 Yoo, N. J., Park, B. S., Lee, M. W., and Lee, J. H. (2001), "Development of probabilitistic model of landslides using infinite slope stability analysis", Journal of KSCE, Vol.21, No.1C, pp.57-68.
17 van Genuchten, M. T. (1980), "A closed-form equation for predicting the hydraulic conductivity of unsaturated soils", Soil Science Society America Journal, Vol.44, No.5, pp.892-898.   DOI   ScienceOn
18 Zhang, L. L., Zhang, J., Zhang, L. M., and Tang, W. H. (2011), "Stability analysis of rainfall-induced slope failure: a review", Proceedings of the ICE-Geotechnical Engineering, Vol.164, No.5, pp.299-316.
19 Cho, S. E. (2012), "Probabilistic analysis of seepage that considers the spatial variability of permeability for an embankment on soil foundation", Engineering Geology, Vol.133-134, pp.30-39.   DOI
20 Cho, S. E. (2014), "Probabilistic stability analysis of rainfall-induced landslides considering spatial variability of permeability", Engineering Geology, Vol.171, pp.11-20.   DOI
21 Baecher, G. B. and Christian, J. T. (2003), Reliability and Statistics in Geotechnical Engineering, John Wiley & Sons.
22 Bishop, A. W. (1959), "The principle of effective stress", Teknisk Ukeblad, Vol.106, No.39, pp.859-863.
23 DeGroot, D. J. and Baecher, G. B. (1993), "Estimating autocovariance of in-situ soil properties", Journal of the Geotechnical Engineering, Vol.119, No.1, pp.147-166.   DOI
24 Cho, S. E. and Lee, S. R. (2001), "Instability of unsaturated soil slopes due to infiltration", Computers and Geotechnics, Vol.28, No. 3, pp.185-208.   DOI   ScienceOn
25 Cho, S. E. and Lee, S. R. (2002), "Evaluation of surficial stability for homogeneous slopes considering rainfall characteristics", Journal of Geotechnical and Geoenvironmental Engineering, Vol.128, No.9, pp.756-763.   DOI   ScienceOn
26 Cho, S. E. and Park, H. C. (2008), "A study on the probabilistic analysis method considering spatial variability of soil properties", Journal of Korean Geotechnical Society(KGS), Vol.24, No.8, pp. 111-123.   과학기술학회마을
27 Elkateb, T., Chalaturnyk, R., and Robertson, P. K. (2002), "An overview of soil heterogeneity: Quantification and implications on geotechnical field problems", Canadian Geotechnical Journal, Vol.40, No.1, pp.1-15.
28 Fenton, G. A. and Griffiths, D. V. (1993), "Statistics of block conductivity through a simple bounded stochastic medium", Water Resources Research, Vol.29, No.6, pp.1825-1830.   DOI
29 Fredlund, D. G., Rahardjo, H., and Fredlund, M. D. (2012), Unsaturated Soil Mechanics in Engineering Practice, John Wiley & Sons, New York.
30 Ghanem, R. G. and Spanos, P. D. (1991), Stochastic Finite Element-A Spectral Approach, Springer Verlag, New York.
31 Griffiths, D. V. and Fenton, G. A. (1993), "Seepage beneath water retaining structures founded on spatially random soil", Geotechnique, Vol.43, No.4, pp.577-587.   DOI