A Study on Moisture Infiltration of Subsoil in a Slope due to Tropical Rainfall

Ohtsu, Hiroyasu; Hotta, Yohei; Soralump, Suttisak; Niimura, Tomonari

doi:10.2472/jsms.59.192

J. Soc. Mat. Sci., Japan

2010

DOI: 10.2472/jsms.59.192

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A Study on Moisture Infiltration of Subsoil in a Slope due to Tropical Rainfall

Hiroyasu Ohtsu¹,

Yohei Hotta²,

Suttisak Soralump

et al.

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Cited by 2 publications

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Applicability of a Modified I-D Method for Predicting Slope Failure to Different Slopes

Danjo,

Ishizawa

2023

J. Disaster Res.

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The authors have proposed a modified intensity–duration (I-D) method that incorporates field measurements of tensiometer to improve the accuracy of predicting the risk of slope failure. This method uses an indicator that considers the relationship of the duration from the time point at which the saturated zone is assumed to have formed to the average rainfall intensity during that period. The usefulness of this method has been verified, but its applicability to different slopes has not yet been investigated. Here, the authors collected long-term observations on a natural slope in Minamiashigara City, Kanagawa Prefecture, and examined the Modified I-D method using data on slope failures in the surrounding area. The authors also compared the results with plots of previous rainfall index (soil water index–accumulated rainfall in 60 min, effective rainfall amount with a half-life of 72 h–effective rainfall amount with a half-life of 1.5 h, and accumulated rainfall–accumulated rainfall in 60 min). The snake curves for rainfall events during slope failure and non-failure were clearly separated. The accuracy was high, confirming the applicability of the modified I-D method.

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Applicability of a Modified I-D Method for Predicting Slope Failure to Different Slopes

Danjo,

Ishizawa

2023

J. Disaster Res.

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A Comparison of Torrential Rainfall-Triggerd Natural Slope Failure in Thailand and Japan

Ohtsu¹,

Maeda²,

Takekuni³

et al. 2011

J. JSCE, Ser. C

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A Study on Moisture Infiltration of Subsoil in a Slope due to Tropical Rainfall

Cited by 2 publications

References 3 publications

Applicability of a Modified I-D Method for Predicting Slope Failure to Different Slopes

Applicability of a Modified I-D Method for Predicting Slope Failure to Different Slopes

A Comparison of Torrential Rainfall-Triggerd Natural Slope Failure in Thailand and Japan

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