Dynamic simulation of landslide dam behavior considering kinematic characteristics using a coupled DDA-SPH method

Wang, Wei; Chen, Guangqi; Zhang, Yingbin; Zheng, Lu; Zhang, Hong

doi:10.1016/j.enganabound.2017.02.016

Cited by 63 publications

(21 citation statements)

References 46 publications

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“…Moreover, discrete models for landslide motions can be coupled with the other models for water flows. Typical examples include coupled DEM models and fluid flow such computational fluid dynamics (CFD) models [29], SPH models [30] and Lattice-Boltzmann Method (LBM) [31] as well as coupled DDA-SPH models [32][33]. However, constrained by the excessive computational cost, a convention in discrete models is to introduce unjustified assumptions in terms of sediment transport.…”

Section: Discrete Modelsmentioning

confidence: 99%

“…Specifically, DEM models [29][30] usually employ coarse grain models [35][36], in which upscaled grains with a size larger than real cases are used. Besides, DDA models [32][33] presume that landslides are composed of several large blocks. Such practices are physically unjustified as coarse grains can settle faster than finer grains under a given flow condition.…”

Section: Discrete Modelsmentioning

confidence: 99%

“…Such practices are physically unjustified as coarse grains can settle faster than finer grains under a given flow condition. Second, discrete models adopt much narrower grain size distributions (e.g., DEM-CFD models [29]) or even presume a single sediment size (e.g., MPM two-phase models [27], SPH models [28] and DDA-SPH models [32][33]) due to restricted shape functions used for fluid-solid interaction. However, the sediments in landslides may be highly heterogeneous with widely distributed sizes, ranging from clay size ( 10 -5 m) to boulder size ( 10 1 m) [36].…”

Section: Discrete Modelsmentioning

confidence: 99%

See 2 more Smart Citations

Barrier lake formation due to landslide impacting a river: A numerical study using a double layer-averaged two-phase flow model

Cao

Cui

et al. 2020

Applied Mathematical Modelling

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 A new double layer-averaged two-phase flow model is proposed for barrier lake formation due to landslide impacting a river  Grains play a key role in driving water movement during subaqueous landslide motion and a two-phase theory is warranted  Grain size effects are revealed, i.e., coarse grains and grain-size uniformity favour barrier lake formation  A new threshold for barrier lake formation is proposed, based on landslide-to-river momentum ratio and grain size 2

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Section: Discrete Modelsmentioning

confidence: 99%

Section: Discrete Modelsmentioning

confidence: 99%

Section: Discrete Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Barrier lake formation due to landslide impacting a river: A numerical study using a double layer-averaged two-phase flow model

Cao

Cui

et al. 2020

Applied Mathematical Modelling

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“…Many scholars have carried out model experiments on landslide dam failure [15][16][17][18]. In addition to experimental research, physically-based mathematical models have been established for practical uses [19][20][21][22][23]. The application of these models and methods are useful in disaster prevention, mitigation, and risk assessment of floods caused by the failure of landslide dams.…”

Section: Introductionmentioning

confidence: 99%

A Preliminary Study of the Failure Modes and Process of Landslide Dams Due to Upstream Flow

Zhu

Peng

Cheng

et al. 2019

Water

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In the process of mineral development, large-scale flash floods (or debris flows) can be induced by the failure of landslide dams formed by the disorganized stacking of mine waste. In this study, the modes and processes of mine waste dam failures were explored using 13 experimental tests based on the field investigation of landslide dams in the Xiaoqinling gold mining area in China. Our 13 mine waste dam experiments exhibited three failure modes: (i) Piping, overtopping, and erosion; (ii) overtopping and soil collapse; and (iii) overtopping and erosion. In addition, the failure processes of the landslide dams included impoundment, seepage, overtopping, and soil erosion. Different experimental conditions would inevitably lead to different failure processes and modes, with the failure modes being primarily determined by the seepage characteristics. Overtopping was the triggering condition for dam failure. The landslide dam failure process was determined based on the particle size of the mine waste and the shape of the dam. These findings will provide a scientific reference for the prevention and mitigation of natural hazards in mining areas.

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“…They use the discontinuous deformation analysis (DDA) method 29–31 , the finite element method (FEM) 32,33 , the discrete element method (DEM) 34,35 , the smoothed particle hydrodynamics method (SPH) 7,9 , to analyse the stability and simulate the failure process of the landslide. Some other studies also incorporate hydraulically based models to simulate landslide behaviour, such as DDA-SPH coupled method 36 and shallow water assumption-based model 37 . However, difficulties remain in the measurement of related parameters in these numerical models.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive analysis of landslide stability and related countermeasures: a case study of the Lanmuxi landslide in China

Han

et al. 2019

Sci Rep

Self Cite

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We report on a comprehensive method for analyzing landslide stability and the mitigation effect of countermeasures in this paper. The proposed method is a combination of theoretical method and numerical method. To address the uncertainties of the soil strength parameters, the rational values of these parameters are comprehensively determined by the back-analysis result of the reliability method and the result by the quantitative method, as well as the in-situ geological test. To evaluate the slope stability, the limit analysis using the 2D upper bound method and the FEM simulation using strength reduction method are performed, respectively. In order to illustrate the presented method, the so-called Lanmuxi landslide in China is selected as a case study. Results demonstrated that the stress and strain majorly concentrated at the toe and crown of the slope. According to the analysis results, countermeasures consisting of anchor lattice beams, landslide piles, and cracks filling, are suggested to reduce the failure risk of the landslide. Effect assessment based on the FEM analysis verifies the feasibility and effectiveness of the recommended countermeasures.

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Dynamic simulation of landslide dam behavior considering kinematic characteristics using a coupled DDA-SPH method

Cited by 63 publications

References 46 publications

Barrier lake formation due to landslide impacting a river: A numerical study using a double layer-averaged two-phase flow model

Barrier lake formation due to landslide impacting a river: A numerical study using a double layer-averaged two-phase flow model

A Preliminary Study of the Failure Modes and Process of Landslide Dams Due to Upstream Flow

Comprehensive analysis of landslide stability and related countermeasures: a case study of the Lanmuxi landslide in China

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