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http://dx.doi.org/10.9720/kseg.2018.1.011

Infinite Slope Stability Analysis based on Rainfall Pattern in Ulleung-do  

Lee, Chung-Ki (Department of Earth and Environmental Sciences, Chungbuk National University)
Moon, Seong-Woo (Department of Earth and Environmental Sciences, Chungbuk National University)
Yun, Hyun-Seok (Department of Earth and Environmental Sciences, Chungbuk National University)
Seo, Yong-Seok (Department of Earth and Environmental Sciences, Chungbuk National University)
Publication Information
The Journal of Engineering Geology / v.28, no.1, 2018 , pp. 11-24 More about this Journal
Abstract
The purpose of slope stability analysis is to predict the location and occurrence time considering the rainfall, topographic and soil characteristics, etc. In this study, infinite slope stability analysis considering the time distribution characteristics of the daily maximum rainfall was conducted using a model that combines a digital terrain model and a groundwater flow model. As the results of slope stability analysis, 69.1~70.0% of Fs < 1 cells are in the range of slope angle $20{\sim}50^{\circ}$ and Fs < 1 starts to appear in 2 hours for $Q_1$ model, 5 hours for $Q_2$, 7 hours for $Q_3$ and 6 hours for $Q_4$. Furthermore, the maximum number of Fs < 1 cells appear in 6 hours for $Q_1$ model, 12 hours for $Q_2$, 16 hours for $Q_3$ and 20 hours for $Q_4$, and the area of Fs < 1 is 14.3% for $Q_1$ model, 15.0% for $Q_2$, 15.6% for $Q_3$, and 16.3% for $Q_4$.
Keywords
landslide; Huff's method; rainfall pattern; temporal groundwater change model; infinite slope stability analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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