土木学会論文集G(環境)
Online ISSN : 2185-6648
ISSN-L : 2185-6648
地球環境研究論文集 第25巻
Hydrological-Geotechnical Model to Assess the Extreme Rainfall-Induced Shallow Landslides
Thapthai CHAITHONGDaisuke KOMORI
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2017 年 73 巻 5 号 p. I_223-I_228

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 A physically based model for assessment of shallow landslides triggered by heavy rainfall was analysed, applied, and validated to a case in the Khao Phnom, Krabi, Thailand. This model is based on the coupling of the hydrological model with an infinite slope stability model. Modified Green-Ampt model and steady groundwater flow model were used in the hydrological model. The distributions of rainfall intensity were obtained from eighteen rain gauges around the landslides. The model prediction capability was evaluated by using the receiver operating characteristic (ROC) curve. Considering to the analysis results, it was found that the model can predict the unstable areas (FS<1) where occur the hillslopes surrounding the peak of the mountain. The accuracy of the model was 0.737 for the Khao Phnom landslide.

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© 2017 Japan Society of Civil Engineers
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