Run-out analysis of flow-like landslides triggered by the Ms 8.0 2008 Wenchuan earthquake using smoothed particle hydrodynamics

Huang, Yu; Zhang, Weijie; Liu, Fangzhou; Pan, Xie; Hao, Liang

doi:10.1007/s10346-011-0285-5

Cited by 198 publications

(83 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to basic principles presented above, a SPH procedure and code are established based on the SPH code written in Visual Fortran (Liu and Liu 2003). The verification of the SPH model mentioned above has been done with two classical benchmark problems, dam break and granular flow, which can be found in many research papers (Huang et al 2012;Shao and Edmond 2003). The results agree with the test results.…”

Section: Boundary Treatmentmentioning

confidence: 72%

“…There are three large typical flow-like landslides, the Tangjiashan, Wangjiayan, and Donghekou landslides, which were among the most catastrophic, destroying many buildings and causing numerous casualties (Huang and Li 2009). The run-out analyses of these landslides were performed with 2D SPH models as applications of SPH modeling to real flow-like landslides by Huang et al (2012). The result indicated that the fundamental dynamic behavior of flowlike landslides showed good agreements with site observations.…”

Section: Application and Comparison Of 3d Sph Modeling To Flow-like Lmentioning

confidence: 91%

“…A depth-averaged model for the simulation of rapid landslide motion across complex terrain was introduced by McDougall (McDougall and Hungr 2004). Run-out analysis was performed by Huang et al (2012) for flow-like landslides triggered by the Ms 8.0 Wenchuan earthquake that occurred on 12 May 2008 in Sichuan Province, China, and simulation results showed good agreement with characteristics of flow-like landslides observed in the field. These applications demonstrate that SPH method is able to capture the major fundamental dynamic behavior of flowlike landslides, define the overall hazardous areas, and estimate the intensity of the hazard .…”

Section: Introductionmentioning

confidence: 95%

“…A 2D SPH simulation of the Tangjiashan landslide was conducted to study by Huang et al (2012). The 3D profile particle model was built to simulate the Tangjiashan landslide movement according to the 2D profile topographies data.…”

Section: Tangjiashan Landslidementioning

confidence: 99%

“…According to the classification of landslides, there is a term ''flow-like landslides'' to describe these types of landslides with extremely fast speed. Flow-like landslides are a sort of landslides which move rapidly, have a longer run-out (from several 100 m up to several kilometers) than the other types of landslides, and also probably cause greater damages and casualties (Pastor et al 2009;Huang et al 2012;Cascini et al 2014). Flow-like landslides are easily triggered by earthquakes and heavy rain fails.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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

Liu

2014

Environ Earth Sci

View full text Add to dashboard Cite

Many landslides can often be characterized as a sort of landslides which move rapidly like flowing fluid and thus have a long run-out. They usually cause large damage and casualties especially when they are trigged by an earthquake or heavy rain. Numerical simulations of flowlike landslides are difficult due to the existence of free surface and large flow deformations. In this work, the smoothed particle hydrodynamics (SPH) method is applied to model two-and three-dimensional flow-like landslides for the run-out analysis. This is because SPH method is a meshfree, Lagrangian particle method, and is believed to be superior to conventional numerical methods in treating free surfaces, moving interfaces, and large deformations; hence, it is ideal in describing the complex fluidization characteristics in flow-like landslides. In this paper, a Bingham flow model and Navier-Stokes equations are incorporated into the SPH frame work, in which fluids are discretized by flow particles, and 3D terrain topography from GIS is represented by surface (or solid wall) particles.An improved SPH method is first applied to simulate the whole run-out processes of three flow-like landslides, which were triggered by Wenchuan earthquake that occurred in China in 2008. The effectiveness of the improved SPH method in modeling flow-like landslides is demonstrated by the good agreement of the 3D profile simulation results obtained from the present SPH simulation with field observation and results from other open sources. The SPH method is then used to predict the runout area of Jinpingzi landslide.

show abstract

Section: Boundary Treatmentmentioning

confidence: 72%

Section: Application and Comparison Of 3d Sph Modeling To Flow-like Lmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 95%

Section: Tangjiashan Landslidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Liu

2014

Environ Earth Sci

View full text Add to dashboard Cite

show abstract

u‐p semi‐Lagrangian reproducing kernel formulation for landslide modeling

Siriaksorn

Chi

Foster

et al. 2017

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

This paper presents a u-p (displacement-pressure) semi-Lagrangian reproducing kernel (RK) formulation to effectively analyze landslide processes. The semi-Lagrangian RK approximation is constructed based on Lagrangian discretization points with fixed kernel supports in the current configuration. As a result, it tracks state variables at discretization points while allowing extreme deformation and material separation that is beyond the capability of Lagrangian formulations. The u-p formulation following Biot theory is incorporated into the formulation to describe poromechanics of saturated geomaterials.In addition, a stabilized nodal integration method to ensure stability of the domain integration and kernel contact algorithms to model contact between bodies are introduced in the u-p semi-Lagrangian RK formulation. The proposed method is verified with several numerical examples and validated with an experimental result and the field data of an actual landslide.

show abstract

Material point method‐based simulation of dynamic process of soil landslides considering pore fluid pressure

Sun

et al. 2023

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

In this study, the dynamic process of soil landslides is investigated using the material point method (MPM). A basal friction algorithm is developed based on the MPM, and the pore water pressure is considered for calculating the basal friction. A large‐scale debris flow experiment is performed to validate the effectiveness of the MPM in simulating the dynamic process of soil landslides. The calculated depths of the debris flow using the MPM are consistent with the experimental results. The effects of the basal friction angle and internal friction angle on the debris flow depths are discussed. Moreover, a landslide case is simulated using the MPM, and the calculation results are consistent with the measured results. The horizontal velocity, vertical velocity, velocity direction, and kinetic energy of the landslide are analyzed. Finally, a case involving a different slope near a landslide is evaluated using the MPM. The distributions of velocity in different directions and changes in the average velocity, kinetic energy, and sliding distance are analyzed. By setting a retaining wall, the accumulation height of a landslide accumulated at the retaining wall and the normal force on the retaining wall can be estimated.

show abstract

Run-out analysis of flow-like landslides triggered by the Ms 8.0 2008 Wenchuan earthquake using smoothed particle hydrodynamics

Cited by 198 publications

References 18 publications

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

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

u‐p semi‐Lagrangian reproducing kernel formulation for landslide modeling

Material point method‐based simulation of dynamic process of soil landslides considering pore fluid pressure

Contact Info

Product

Resources

About