Rainfall infiltration: infinite slope model for landslides triggering by rainstorm |
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| Authors: | Agus Setyo Muntohar and Hung-Jiun Liao |
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| Institution: | (1) Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta, Jl. Lingkar Selatan, Taman Tirto. D.I., Yogyakarta, Indonesia;(2) Department of Construction Engineering, College of Engineering, National Taiwan University of Science and Technology, 43 Sec. 4 Keelung Road, Taipei, 106, Taiwan |
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| Abstract: | Shallow slope failure due to heavy rainfall during rainstorm and typhoon is common in mountain areas. Among the models used
for analyzing the slope stability, the rainwater infiltration model integrated with slope stability model can be an effective
way to evaluate the stability of slopes during rainstorm. This paper will propose an integrated Green–Ampt infiltration model
and infinite slope stability model for the analysis of shallow type slope failure. To verify the suitability of the proposed
model, seven landslide cases occurred in Italy and Hong Kong are adopted in this paper. The results indicate that the proposed
model can be used to distinguish failed and not-yet failed slopes. In addition, the proposed model can be used as the first
approximation for estimating the occurrence time of a rainfall-induced shallow landslide and its depth of sliding. |
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