Three-dimensional run-out analysis and prediction of flow-like landslides using smoothed particle hydrodynamics

Hu, Man; Liu, Moubin; Liu, G. R.

doi:10.1007/s12665-014-3513-1

Cited by 36 publications

(20 citation statements)

References 26 publications

(38 reference statements)

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“…Previous studies have been conducted on the verification analysis of landslides, which proves the accuracy of SPH model is relatively high (Huang et al, 2012;Hu et al, 2015). The error of slide distance can reach 4.6 % (Huang et al, 2012).…”

Section: Dafushan Landslide Sph Simulation and Resultsmentioning

confidence: 87%

“…Cuomo et al (2016) used SPH to simulate flow-like landslides (debris flows and debris avalanches) and discussed the influence of bed entrainment on landslide propagation. Hu et al (2015) conducted two-and three-dimensional SPH numerical simulations of flow-like landslides triggered by the 2008 Wenchuan earthquake in China and proposed that the SPH method is well suited for modeling free surfaces, moving interfaces, and extensive deformation.…”

Section: Introductionmentioning

confidence: 99%

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Forecasting landslide mobility using an SPH model and ring shear strength tests: a case study

Huang

Deng

et al. 2018

Nat. Hazards Earth Syst. Sci.

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Abstract. Flow-like landslides, such as flow slides and debris avalanches, have caused serious infrastructure damage and casualties for centuries. Effective numerical simulation incorporating accurate soil mechanical parameters is essential for predicting post-failure landslide mobility. In this study, smoothed particle hydrodynamics (SPH) incorporating soil ring shear test results were used to forecast the long-runout mobility for a landslide on an unstable slope in China. First, a series of ring shear tests under different axial stresses and shear velocities were conducted to evaluate the residual shear strength of slip zones after extensive shear deformation. Based on the ring shear test results, SPH modeling was conducted to predict the post-failure mobility of a previously identified unstable slope. The results indicate that the landslide would cut a fire service road on the slope after 12 s and cover an expressway at the foot of that slope after 36 s. In the model, the landslide would finally stop sliding about 38 m beyond the foot of the slope after 200 s. This study extends the application of the SPH model from disaster simulations to predictive analysis of unstable landslide. In addition, two sets of comparative calculations were carried out which demonstrate the robustness of the SPH method.

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Section: Dafushan Landslide Sph Simulation and Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Forecasting landslide mobility using an SPH model and ring shear strength tests: a case study

Huang

Deng

et al. 2018

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Previous studies have been conducted on the verification analysis of landslides, which proves the accuracy of SPH model is relatively high (Huang et al, 2012;Hu et al, 2015).…”

Section: Dafushan Landslide Sph Simulation and Resultsmentioning

confidence: 93%

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Huang¹

2018

Preprint

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Flow-like landslides, such as flow slides and debris avalanches, have caused serious infrastructure damage and casualties for centuries. Effective numerical simulation incorporating accurate soil mechanical parameters is essential for predicting post-failure landslide mobility. In this study, smoothed particle hydrodynamics (SPH) incorporating soil ring shear test results were used to forecast the long-runout mobility for a landslide on an unstable slope in China. First, a series of ring shear tests under different axial stresses and shear velocities were conducted to evaluate the residual shear strength of slip zones after extensive shear deformation. Based on the ring shear test results, SPH modeling was conducted to predict the post-failure mobility of a previously identified unstable slope. The results indicate that the landslide would cut a fire service road on the slope after 12 s and cover an expressway at the foot of that slope after 36 s. In the model, the landslide would finally stop sliding about 38 m beyond the foot of the slope after 200 s. This study extends the application of the SPH model from disaster simulations to predictive analysis of unstable landslide. In addition, two sets of comparative calculations were carried out which demonstrate the robustness of the SPH method.

show abstract

“…As for the consideration of constitutive model, elasto-plastic models are usually adopt for slope stability [Bui et al (2008); Chen and Qiu (2014)]. While for researches focus on propagation of granular avalanche, a number of researchers still use classical Bingham rheology [Huang et al (2012); Hu et al (2015)]. Some models begin to employ μ(I) rheology borrowed from dense granular flow theory [Pahar and Dhar (2017); Xu et al (2017)].…”

Section: Introductionmentioning

confidence: 99%

Viscous Elastoplastic SPH Model for Long-Distance High-Speed Landslide

Zhang

Shi

et al. 2018

Int. J. Comput. Methods

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In the landslide-induced debris flow problem, the soil slope experiences three stages: slope instability, debris flow and deposition. This study develops a three-dimensional smoothed particle hydrodynamics model which adopts elastoplastic viscous constitutive relation to simulate this complex process. The Drucker–Prager model with nonassociated plastic flow rule is implemented for slope instability and deposition and constant viscosity is used for propagation stage. The model is validated with laboratory dry-granular dam-break experiments. Good agreements are found between the simulated results and the laboratory data on both the shape evolution and the velocity field. Then, we use the model to study the Yigong avalanche after detailed discussion of model parameters, the time of duration, deposited scope and estimated velocity essentially agree with site survey. Thus, the model is able to simulate instability and flow of dense granular materials at both experimental and field scale, and it could be a powerful tool for the landslide-induced debris flow study.

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Three-dimensional run-out analysis and prediction of flow-like landslides using smoothed particle hydrodynamics

Cited by 36 publications

References 26 publications

Forecasting landslide mobility using an SPH model and ring shear strength tests: a case study

Forecasting landslide mobility using an SPH model and ring shear strength tests: a case study

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Viscous Elastoplastic SPH Model for Long-Distance High-Speed Landslide

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