Analysis of Rainfall-Induced Slope Failure Using Monte Carlo Simulations: A Case Study

Raghuram, A. S. S. and Basha, B. Munwar (2020) Analysis of Rainfall-Induced Slope Failure Using Monte Carlo Simulations: A Case Study. Lecture Notes in Civil Engineering, 86. pp. 111-127. ISSN 2366-2557

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Climatic changes influence the depth of slip surface drastically. Slope failures particularly, failures caused by rainfall, slip surface lie above the water table (i.e., in unsaturated zone). In this zone, suction develops, which increases the slope stability in dry conditions. During rainfall, water infiltrates into the soil pores due to which suction stress decreases significantly, and thereby, stability of slope decreases. Relation between soil suction and soil water content can be represented using soil water characteristic curve (SWCC). The measured SWCC, hydraulic conductivity (ks) of the soil are inherently variable. Conventional approaches may render unrealistic safety of the slope sometimes, as they do not account for variability. Therefore, it is highly appropriate to develop a reliability-based design (RBD) for stability analysis of rainfall-induced slopes. In this study, an efficient reliability analysis using Monte Carlo Simulations (MCS) is presented for rainfall-induced slope failures. A case study on shallow slope failures near Seattle, Washington, which are of sandy colluvium deposits on steep coastal hill slopes, is presented.

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Item Type: Article
Uncontrolled Keywords: Conventional approach; Rainfall-induced slope failures; Reliability based design; Seattle , Washington; Shallow slope failure; Soil-water characteristic curve; Stability analysis; Stability of slopes;Failure (mechanical); Groundwater; Monte Carlo methods; Rain; Reliability analysis; Soil moisture
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 31 Jul 2021 06:48
Last Modified: 04 Mar 2022 10:27
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