Soil tank test on seepage and failure behaviors of Shirasu slope during rainfall

Kitamura, Ryosuke; Sako, Kazunari; Kato, Syunji; Mizushima, Toshiki; Imanishi, Hajime

doi:10.3208/jgs.2.149

Cited by 16 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, the formation of a typical sheared zone in the slope is properly predicted, in which the shear strain is localized over a narrow zone. The calculated sheared zones by the four coupled models all start to form at the toe of slope after about 6 h of infiltration and then propagate toward the slope crest, which are in good agreement with the experimental observations [83]. The propagation of the sheared zone is driven by the rain infiltration.…”

Section: Computational Modelsupporting

confidence: 83%

A coupled two‐phase fluid flow and elastoplastic deformation model for unsaturated soils: theory, implementation, and application

Chen

Liu

et al. 2015

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

SUMMARYAlthough numerous numerical models have been proposed for simulating the coupled hydromechanical behaviors in unsaturated soils, few studies satisfactorily reproduced the soil-water-air three-phase coupling processes. Particularly, the impacts of deformation dependence of water retention curve, bonding stress, and gas flow on the coupled processes were less examined within a coupled soil-water-air model. Based on our newly developed constitutive models (Hu et al., 2013(Hu et al., , 2014(Hu et al., , 2015 in which the soil-water-air couplings have been appropriately captured, this study develops a computer code named F 2 Mus3D to investigate the coupled processes with a focus on the above impacts. In the numerical implementation, the generalized-α time integration scheme was adopted to solve the equations, and a return-mapping implicit stress integration scheme was used to update the state variables. The numerical model was verified by two well-designed laboratory tests and was applied for modeling the coupled elastoplastic deformation and twophase fluid flow processes in a homogenous soil slope induced by rainfall infiltration. The simulation results demonstrated that the numerical model well reproduces the initiation of a sheared zone at the toe of the slope and its propagation toward the crest as the rain infiltration proceeds, which manifests a typical mechanism for rainfall-induced shallow landslides. The simulated plastic strain and deformation would be remarkably underestimated when the bonding stress and/or the deformation-dependent nature of hydraulic properties are ignored in the coupled model. But on the contrary, the negligence of gas flow in the slope soil results in an overestimation of the rainfall-induced deformation.

show abstract

Section: Computational Modelsupporting

confidence: 83%

A coupled two‐phase fluid flow and elastoplastic deformation model for unsaturated soils: theory, implementation, and application

Chen

Liu

et al. 2015

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

“…Recently, research on the failure mechanisms in unsaturated conditions as well as those under saturation conditions have been investigated and have been reported (e.g., Olivares et al [ [6], and Kitamura et al [7]). In particular, Yagi et al [5] indicated the importance of the amount of limited rainfall and proposed a prediction method of failure based on field and experimental data for volcanic slopes.…”

Section: Advances In Civil Engineeringmentioning

confidence: 99%

Stability Evaluation of Volcanic Slope Subjected to Rainfall and Freeze-Thaw Action Based on Field Monitoring

Kawamura

Miura

2011

Advances in Civil Engineering

View full text Add to dashboard Cite

Rainfall-induced failures of natural and artificial slopes such as cut slopes, which are subjected to freezing and thawing, have been frequently reported in Hokkaido, Japan. In particular, many failures occur intensively from spring to summer seasons. Despite numerous field studies, explanation of their mechanical behavior based on in situ data has not yet been completely achieved due to the difficulty in grasping failure conditions. This study aims at clarifying the aspects of in-situ volcanic slopes subjected to rainfall and freeze-thaw action. The changes in soil moisture, pore pressure, deformations, and temperatures in the slope were investigated using soil moisture meters, tensiometers, thermocouple sensors, clinometers, settlement gauges, an anemovane, a snow gauge, and a rainfall gauge. The data generated from these measures indicated deformation in the slope examined mainly proceeded during the drainage process according to changes in soil moisture. Based on this data, a prediction method for failures is discussed in detail.

show abstract

Experimental study on failure of temporary earthen slope triggered by intense rainfall

Song

Tan

2020

Engineering Failure Analysis

View full text Add to dashboard Cite

Soil tank test on seepage and failure behaviors of Shirasu slope during rainfall

Cited by 16 publications

References 4 publications

A coupled two‐phase fluid flow and elastoplastic deformation model for unsaturated soils: theory, implementation, and application

A coupled two‐phase fluid flow and elastoplastic deformation model for unsaturated soils: theory, implementation, and application

Stability Evaluation of Volcanic Slope Subjected to Rainfall and Freeze-Thaw Action Based on Field Monitoring

Experimental study on failure of temporary earthen slope triggered by intense rainfall

Contact Info

Product

Resources

About