Abstract
The influence of long duration rainfall on the stability and deformation characteristics of red‐clay slopes in China was evaluated using GeoStudio 2012. The 15 m tall modeled slope with a slope inclination of approximately 37° was subjected to rainfall at an intensity of 6.25 × 10−3 m/h for various durations. The durations examined in this study ranged between 1 day and 5 days. The pore water pressure and deformations resulting in the slope were evaluated using coupled and uncoupled analysis. Specifically, in the coupled analyses, the combined influence of seepage and deformation on the pore pressure, development of strains and the slope stability were examined. On the other hand, in the uncoupled analyses, only the influence of seepage on the pore pressure, strain development and factor of safety was considered. The results obtained suggest that the rate of pore pressure development was most significantly influenced when four days of rainfall was applied to the slope. The slope was found to settle following short duration rainfall events. However, the slope would swell during the long duration rainfall events. In these events, the greatest swelling was observed at the head of the slope. Similar to the pore pressure response, the factor of safety behaved hysterically with larger magnitudes noted in the coupled analysis in comparison to the uncoupled analysis.
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References
Brooks SM, Richards KS (1994) The significance of rainstorm variations to shallow translation hillslope failure. Earth Surf Proc Land 19(1):85–94
Dhakal AS, Sidle RC (2004) Distributed simulations of landslides for different rainfall conditions. Hydrol Process 18(4):757–776
Fletcher L, Hungr O, Evans SG (2002) Contrasting failure behavior of two large landslides in clay and silt. Can Geotech J 39:46–62
Fredlund DG, Rahardjo H (1993) Soil mechanics for unsaturated soils. John Wiley & Sons, New York
Fredlund DF, Xing A (1994) Equations for the soil-water characteristic curve. Can Geotech J 39:46–62
Geo-Slope International, Ltd. (2014a) Seepage modeling with SEEP/W. Geo-Slope International
Geo-Slope International, Ltd. (2014b) Stability modeling with SLOPE/W. Geo-Slope International
Geo-Slope International, Ltd. (2014c) Stress-deformation modeling with SIGMA/W. Geo-Slope International
Haugerud RA (2014) Preliminary interpretation of pre-2014 landslide deposits in the vicinity of Oso, Washington, U.S. Geological Survey Open-File Report 2014-1065
Heark D, Tiwari B, Ahmad S, Stapleton J (2014) Effect of rainfall in matric suction and seepage in clay slopes. Proceedings of the 12th international symposium on geo-disaster reduction, vol 1, pp 65–73
Henn B, Cao Q, Lettenmaier DP, Magirl CS, Mass C, Bower JB, St. Laurent M, Mao Y, Perica S (2015) Hydroclimatic conditions preceding the March 2014 Oso landslides. J Hydrol 16:1243–1249
Keaton JR, Wartman J, Anderson S, Benoit J, De La Chapelle J, Gilbert RB, Montgomery DR (2014) The 22 March 2014 Oso landslide, Snohomish County, Washington. Geotechnical Extreme Event Reconnaissance (GEER), National Science Foundation
Liu X, Zou L, Song B (2012) Research on unsaturated hydro-mechanical coupling characteristics of slope considering rainfall infiltration and stability assessment. Disaster Adv 5(4):1615–1622
Lumb PB (1962) Effects of rain storms on slope stability. In: Symposium on Hong Kong soils, pp 73–87
Phommachanh V, Matsuo, N, Inegawa K, Kawai K, Iizuka A, Tiwari B (2014) Application of soil/water/air coupled F.E. code to predict seepage and deformation on sandy slopes. In: UNSAT 2014 unsaturated soils—research and application
Ng C, Shi Q (1998) Influence of rainfall intensity and duration on slope stability in unsaturated soils. J Eng Geol 31(2):105–113
Song X, Xu W, Shao J, Xu R (2002) Stability analysis of unsaturated soil slope under atomized rain. J Hohai Univ Nat Sci 30(S6):16–20
Tiwari B, Lewis A, Ferrar E (2013) Experimental simulation of rainfall and seismic effects to trigger slope failures. Geotech Spec Publ 231(1):448–451
Tiwari B, Kawai K, Viradeth P (2014) Numerical modelling of deformation for partially saturated slopes subjected to rainfall. Landslide Sci Saf Geo Environ 2:281–286
Tiwari B, Tran D, Ajmera B, Carrillo Y, Stapleton J, Khan M, Mohiuddin S (2016) Effect of slope steepness, void ratio, and intensity of rainfall on seepage velocity and stability of slopes. In: Proceedings of the geotechnical and structural engineering congress
Tran D (2016) Effect of rainfall and seismic activities on compacted clay slopes having different void ratios and inclinations. Master’s thesis. California State University, Fullerton
Tsai T, Wang J (2011) Examination of influences of rainfall patterns on shallow landslides due to dissipation of matric suction. Environ Earth Sci 63(1):65–75
Wang J, Liang B (2010) Affection of rainfall factor to seepage and stability of loess slope. J Water Resour Water Eng 21(1):42–45
Wartman J, Montgomery DR, Anderson SA, Keaton JR, Benoit J, De La Chapelle J, Gilbert R (2016) The 22 March Oso landslide, Washington. J Geomorphol 253(1):275–288
Zhang L, Zheng Y, Zhao S, Shi W (2003) The feasibility study of strength-reduction method with FEM for calculating safety factors of soil slope stability. Shuili Xue Bao 45(1):21–27
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Xue, K., Tiwari, B., Ajmera, B., Hu, Y. (2017). Stability of Red-Clay Slopes Subjected to Different Durations of Rainfall. In: Mikos, M., Tiwari, B., Yin, Y., Sassa, K. (eds) Advancing Culture of Living with Landslides. WLF 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-53498-5_61
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DOI: https://doi.org/10.1007/978-3-319-53498-5_61
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