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Title: Assessment of critical rainfall scenarios for slope stability analyses based on historical rainfall records in Singapore
Authors: Kim, Yongmin
Rahardjo, Harianto
Nistor, Margarit Mircea
Satyanaga, Alfrendo
Leong, Eng Choon
Sham, Aaron Wai Lun
Keywords: Engineering::Civil engineering::Geotechnical
Issue Date: 2022
Source: Kim, Y., Rahardjo, H., Nistor, M. M., Satyanaga, A., Leong, E. C. & Sham, A. W. L. (2022). Assessment of critical rainfall scenarios for slope stability analyses based on historical rainfall records in Singapore. Environmental Earth Sciences, 81(2), 39-.
Journal: Environmental Earth Sciences
Abstract: Rainfall-induced slope failure occurs in many countries including Singapore where slopes are mostly covered with residual soils. Although the significance and impact of rainfall infiltration in inducing slope failures are widely investigated, there have been diverse conclusions regarding the relative roles between soil and rainfall to slope failures under various environmental conditions. In this study, parametric studies were carried out for seven rainfall scenarios and two soils to explore the critical rainfall scenarios affecting the slope stability in Singapore. Special attention was given to the analyses of intensity and duration of the rainfall based on historical rainfall data during the period of 1982–2017 in Singapore. A transient seepage analysis was conducted, and the computed pore-water pressures were used in stability analyses to calculate the variation of factor of safety of the slope during rainfall. The results indicated that the slope with low permeability soil is mainly affected by the 5-day rainfall scenario, while the slope with high permeability soil is mainly affected by the maximum daily rainfall scenario in Singapore. Three case studies clearly validated the findings of this study.
ISSN: 1866-6280
DOI: 10.1007/s12665-021-10160-4
Schools: School of Civil and Environmental Engineering 
Rights: © 2022 The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022. This version of the article has been accepted for publication, after peer review and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
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