The stability of shallow soil slope was analyzed considering the wetting front within the slope during rainfall. The slope failure model (composed of an upper arc, a straight part in the middle, and a lower arc) was determined according to the unsaturated soil mechanics and Mohr-Coulomb criterion. The drag force due to slope runoff was embedded in the calculation of safety factor. The failure mode in this paper can be degraded to the classical circular failure mode and infinitely long slope failure mode. The experimental results are in good agreement with the theoretical values. The investigations show that the safety factor of slope decreases with increase in soil saturation and runoff depth.
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Y. Cui, Y. Jiang, and C. Guo, “Investigation of the initiation of shallow failure in widely graded loose soil slopes considering interstitial flow and surface runoff,” Landslides, 16(4), 815-828 (2019).
R. W. Day and G. W. Axten, “Surficial stability of compacted clay slopes,” Geotech. Eng., 115(4), 577-580 (1989).
L. L. Zhang, L. M. Zhang, and W. H. Tang, “Rainfall-induced slope failure considering variability of soil properties,” Geotechnique, 55(2), 183-188 (2005).
T. Glade and M. Crozier, Landslide Hazard and Risk, Wiley, Chichester (2005).
D. W. Taylor, “Fundamentals of soil mechanics,” Soil Sci., 66(2), 161 (1948).
A. M. Santoso, K. K. Phoon, and S. T. Quek, “Effects of soil spatial variability on rainfall-induced landslides,” Comput. Struct., 89(11-12), 893-900 (2011).
J. W. Zhou, F. G. Xu, X. G. Yang, et al., “Comprehensive analyses of the initiation and landslide-generated wave processes of the 24 June 2015 Hongyanzi landslide at the Three Gorges Reservoir, China,” Landslides, 13(3), 589-601 (2016).
R. I. Borja, J. A. White, X. Liu, et al., “Factor of safety in a partially saturated slope inferred from hydro-mechanical continuum modelling,” Int. J. Numer. Anal. Methods, 36(2), 236-248 (2012).
J. A. Charles and M. M. Soares, “The stability of slopes in soils with nonlinear failure envelopes,” Can. Geotech. J., 21(3), 397-406 (1984).
A. W. Skempton and F. A. Delory, “Stability of natural slopes in London clay,” Proc. 4th Int. Conf. on Soil Mechanics and Foundation Engineering, London (1957).
G. Zhang and J. M. Zhang, “Stability evaluation of strain-softening slope based on Swedish slice method,” Rock Soil Mech., 28(1), 12-16 (2007).
D. V. Griffiths, J. Huang, and G. F. Dewolfe, “Numerical and analytical observations on long and infinite slopes,” Int. J. Numer. Anal. Met., 35(5), 569-585 (2011).
J. F. Lian, Q. Luo, L. W. Jiang, et al., “Shallow stability analysis of soil slopes under seepage parallel to slope surface,” Chin. J. Geotech. Eng., 37(8), 1440-1448 (2015).
Y. Wei and H. M. Fu, “Study on seepage characteristics of inclined wall dam after heavy drought,” IOP Conference Series: Earth and Environmental Science, 153, 052032 (2018).
N. Lu and W. J. Likos, “Suction stress characteristic curve for unsaturated soil,” J. Geotech. Geoenviron., 132(2), 131-142 (2006).
M. T. V. Genuchten, “A closed-form equation for predicting the hydraulic conductivity of unsaturated soils,” Soil Sci. Soc. Am. J., 44(44), 892-898 (1980).
F. Ye, W. X. Fu, X. Y. Yuan, et al., “Drag force effect of surface runoff on stability of shallow soil slope,” Soil Mech. Found. Eng., 56(1), 12-20 (2019).
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 2, pp. 8-13, March-April, 2021.
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Mao, X., Zhang, B. & Fu, W. Stability Analysis of Soil Slopes Subject to Action of Rainfall-Induced Wetting Front. Soil Mech Found Eng 58, 109–115 (2021). https://doi.org/10.1007/s11204-021-09714-2
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DOI: https://doi.org/10.1007/s11204-021-09714-2