Optimization model for maximum tsunami amplitude generated by riverfront landslides based on laboratory investigations

Yang, Wang; Liu, Jizhixian; Li, Deying; Yan, Shuangjie

doi:10.1016/j.oceaneng.2017.07.030

Cited by 21 publications

(4 citation statements)

References 39 publications

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“…The wave properties of SLTs depend on the kinematic and geometric parameters of the initial landslides, such as the landslide front impacted velocity v, landslide thickness s, landslide width b, landslide length l and landslide impact angles which is the same as the hill slope angle α, varying from 15 to 40 in this study (Ataie-Ashtiani & Najafi-Jilani, 2008;Cui & Zhu, 2011;Fritz et al, 2004;Heller, 2008;Heller & Hager, 2010;Huang et al, 2014;Mohammed & Fritz, 2012;Panizzo et al, 2005;Walder et al, 2003;Wang et al, 2017Wang et al, , 2019. All 84 tests included five kinds of block landslides, four values of h and five values of α (the experimental parameters for all tests are shown in Table 1).…”

Section: Dimensionless Parametersmentioning

confidence: 98%

“…A landslide generator was designed to simulate landslide movements and control the impact speed. The landslide generator was composed of three layers (as shown in Figure 2e) and was a modification of the generator designed by Wang et al (2017) and related to the pneumatic landslide generator of Fritz and Moser (2003). The first layer was composed of a lifting motor, a bottom support frame and four support feet, which was used to support the whole setup and adjust the height of the second and third layers from 0 to 0.7 m. The second layer mainly included two motors: a displacement motor and an angle motor.…”

Section: Experimental Set-upmentioning

confidence: 99%

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Experimental investigation on near‐field edge wave run‐ups generated by landslides in narrow reservoirs

et al. 2023

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Edge waves generated by subaerial landslide‐tsunamis (SLTs) often have potentially huge amplitudes that can endanger human lives, offshore structures, coastal cities and port facilities around reservoirs. Maximum edge wave run‐up (RuM) is the most important parameter for SLT hazard mitigation in an engineering context. This study aimed to investigate the effects of the hill slope angle α on RuM, the first edge wave run‐up Ru1 and the first edge wave decay in the near field Ru1(r/h) through 84 laboratory experiments, which were conducted in a three‐dimensional river channel with α values varying from 15° to 40°. For smaller α values, we found that RuM increased with the increase in α while for large α values exceeding 30°, RuM decreased with the increase in α. An empirical equation considering the effect of α was proposed for the prediction of RuM in the near field, which was well verified by a real case. Additionally, the first edge wave run‐up decay along the shore is also discussed in this paper. This work could have some favourable implications for the preliminary hazard assessment of SLTs.

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Section: Dimensionless Parametersmentioning

confidence: 98%

Section: Experimental Set-upmentioning

confidence: 99%

Experimental investigation on near‐field edge wave run‐ups generated by landslides in narrow reservoirs

et al. 2023

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“…At present, investigations on landslide‐induced surges are mainly divided into two categories, namely, physical model experiments and numerical simulation. The former mainly focuses on different surge variation principles and influencing factors of both rigid and deformable landslides 3,4,5 . However, the workload of carrying out physical model experiments affects the efficiency of the overall research.…”

Section: Introductionmentioning

confidence: 99%

“…The former mainly focuses on different surge variation principles and influencing factors of both rigid and deformable landslides. 3,4,5 However, the workload of carrying out physical model experiments affects the efficiency of the overall research. Heller et al 6 proposed that the hydraulic scale effect attributed to the landslide-induced surge wave attenuation, which indicated that it was not advisable to reduce the scale arbitrarily.…”

Section: Introductionmentioning

confidence: 99%

An optimized DEM‐SPH model for surge waves induced by riverside landslides

Li,

Liu,

Yang

et al. 2023

Num Anal Meth Geomechanics

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Riverside landslides can induce surge waves during the process of entering water. The landslide‐induced surge wave is often regarded as a significant secondary disaster, as its impact region is likely to be even more remarkable than the landslide itself. Due to the large deformation of the soil landslide and water body during the evolution of surge waves, commonly adopted multi‐phase flow models and mesh‐based methods coupled with discrete element models have some limitations, such as weak accuracy, and simulation distortion with immature coupling algorithms. As a result, the pure meshless method of smoothed particle hydrodynamics (SPH) coupling discrete element methods (DEM) become promising. Modified from the traditional empirical formulae‐based coupling algorithm, this study proposes a semi‐resolved algorithm that effectively eliminates the particle distortion at the fluid‐solid coupling interface. The proposed model demonstrates its superiority through a comparison of the pressure and porosity near the coupling interface. Furthermore, the optimized DEM‐SPH model is applied to simulate landslide‐induced surge waves, and the simulation results have also validated the accuracy of the model. This model is capable of accurately simulating the entire propagation process from landslide entry into water to the wave reaching the opposite shore, and therefore provides an effective tool for the prediction and mitigation of wave hazards caused by landslides.

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Failure mode of the hazardous Diaozui rock mass of the Qutang Gorge in the Three Gorges Reservoir area based on a three-dimensional numerical analysis

Peng,

Xie,

Chen

et al. 2024

Bull Eng Geol Environ

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Optimization model for maximum tsunami amplitude generated by riverfront landslides based on laboratory investigations

Cited by 21 publications

References 39 publications

Experimental investigation on near‐field edge wave run‐ups generated by landslides in narrow reservoirs

Experimental investigation on near‐field edge wave run‐ups generated by landslides in narrow reservoirs

An optimized DEM‐SPH model for surge waves induced by riverside landslides

Failure mode of the hazardous Diaozui rock mass of the Qutang Gorge in the Three Gorges Reservoir area based on a three-dimensional numerical analysis

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