Multi Hazard Analysis of Earth Slopes Using Coupled Geotechnical-Hydrological Finite Element Model

Vickneswaran, Tharshikka; Ravichandran, Nadarajah

doi:10.1061/9780784482797.007

Cited by 2 publications

(1 citation statement)

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“…Matsumaru and Uzuoka (2016) [10] replicated the 2004 Niigata Chuetsu Earthquake to analyze the seepage strain of the embankment including the rainfall recorded before the earthquake to obtain the deformation which is greater than the case without rainfall. Vickneswaran and Ravichandran (2020) [11] used a numerical simulation with the acceleration of the 1940 El-Centro earthquake that attacked Imperial Valley, California to compare the effect of rainfall and erosion or rainfall and earthquake with a single hazard, the results show that dual hazards lead to greater slope movement and lower factor of safety.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fines Content on the Stability of Volcanic Embankments under Rainfall and Earthquake

Nguyen

Kawamura

Dao

et al. 2022

Water

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This study aims to investigate the effects of fine content on the mechanical behavior of embankments constructed from volcanic soil subjected to rainfall and earthquake. To accomplish this purpose, a series of 1 g model experiments on slopes using Komaoka volcanic coarse-grained soils as materials was conducted with a spray nozzle and shaking table. In the experiments, shear strain, acceleration, pore water pressure, and saturation degree were monitored and measured to provide an understanding of the failure mechanism of the model embankment with different fine particle contents during post-rainfall earthquakes. The results show that the increase in the fines content of the volcanic soil reduces the permeability of the volcanic embankment but has no significant effect on rainfall-induced slope failure until the shear strain is less than 6%. Moreover, the seismic resistance of volcanic slopes subjected to previous rainfall increases when the fine particle content increases to a certain threshold of about 27%.

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Section: Introductionmentioning

confidence: 99%