Numerical study of the wave impacts generated in a wet dam break

Dumergue, L.E.; Abadie, Stéphane

doi:10.1016/j.jfluidstructs.2022.103716

Cited by 6 publications

(9 citation statements)

References 45 publications

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“…The plane area of the silting zone measures 24.8m 2 , equivalent to about 0.558km 2 in the prototype, while the volume of tailings collapse is estimated at 3.848m 3 (approximately 1.3×107m 3 in the prototype), accounting for roughly 14% of total reservoir capacity. The rupture attained a maximum extent of approximately 1.5 m, a depth of roughly 1.4 m, and the prototype measured 225 m in width by 210 m in depth.. (3)The time taken for the dam-broken water to reach Shangdi village is 1 minute and 49 seconds, which is reduced from the prototype's 22 minutes; The inundation of houses in Shangdi village by the dam break sand flow occurs within 2 minutes and 6 seconds, compared to the prototype's 26 minutes. Since then, the sand flow resulting from the dam break has continued to intensify, impacting Shangdi village for a duration of 5 minutes and 13 seconds (equivalent to 1.1 hours in prototype time).…”

Section: Discussionmentioning

confidence: 94%

“…The embankment dam is utilized as the initial structure, while the centerline method is employed in later stages to construct a graded tailings dam with swirling. The total dam height of the tailings dam is 217.0 m, and the total storage capacity is 9291.4 × 104m 3 . The final stage of tailings pond is a second-class pond, as shown in Fig.…”

Section: Fig 1 Topographic Feature Of Tailings Pond Areamentioning

confidence: 99%

“…A stability analysis was conducted on the reinforced cracked slope using the limit equilibrium method, and then physical tests were used to reproduce the process of tailing dam failure. Dumergue et al 3 conducted numerical analysis of different wave impacts generated by wet dams by changing the downstream depth and obstacle position. Mattas et al 4 used HEC-RAS software to simulate the dam breaking process and flood wave trend using two-dimensional numerical models for two types of failure scenarios.…”

Section: Introducementioning

confidence: 99%

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Research on Risk and Disaster Prediction of Tailings Dam Break in Complex Environments

Luo

2023

Preprint

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In response to the challenges posed by rapid development, wide-ranging disaster impact, and untimely warning of debris flow resulting from tailing dam failure, it is of great significance to study the mechanism of dam failure as well as the evolution law and affected area of debris flow for effective disaster prediction and risk assessment. Establish a 1:150 physical model for tailing dam failure test and combine it with RAMMS debris flow software to study the mechanism of tailing dam failure and the evolution law of rock flow in complex environments. By analyzing and comparing experimental data, the consequences of disaster risk following dam failure were summarized in a comprehensive manner. The results show that: The particle size distribution of the model sand should be moderate; The composition of particle size distribution has a significant impact on the collapse morphology of dam body after dam failure. The saturation line is the lifeline for tailing reservoir stability, and its level determines the degree of tailing saturation in the reservoir. The breach is situated at the midpoint of the dam crest. When the breach occurs, the inflow volume is 0.313m3. According to the flow ratio relationship, the inflow volume at breach occurrence is equivalent to 1.78 times the total amount of a 1000-year flood and 1.19 times the total amount of a probable maximum flood (PMF). The analysis of the surface flow field reveals that the region with the highest flow velocity extends from the dam toe to Shangdi village; The impact on Shizhou village is limited to the backwater of the dam break water flow and gradual sedimentation of tailings.

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Section: Discussionmentioning

confidence: 94%

Section: Fig 1 Topographic Feature Of Tailings Pond Areamentioning

confidence: 99%

Section: Introducementioning

confidence: 99%

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Research on Risk and Disaster Prediction of Tailings Dam Break in Complex Environments

Luo

2023

Preprint

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“…The embankment dam was utilized as the initial structure, while the centerline method was employed in later stages to construct a graded tailings dam with swirling. The total dam height of the tailings dam was 217.0 m, and the total storage capacity was 9291.4 × 104 m 3 . The final stage of the tailings pond was a second-class pond, as shown in Figure 2.…”

Section: Overview Of the Proposed Tailings Pondmentioning

confidence: 99%

“…A stability analysis was conducted on the reinforced cracked slope using the limit equilibrium method, and then physical tests were used to reproduce the process of tailings dam failure. Dumergue et al [3] conducted numerical analyses of different wave impacts generated by wet dams by changing the downstream depth and obstacle position. Mattas et al [4] used 2 of 22 HEC-RAS software (Hydrologic Engineering Centre-River Analysis System) to simulate the dam breaking process and flood wave trend using two-dimensional numerical models for two types of failure scenarios.…”

Section: Introductionmentioning

confidence: 99%

Study on the Evolution of Tailings Dam Break Disaster under Complex Environment

Luo,

Li,

2023

Sustainability

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In response to the challenges posed by rapid development, the wide-ranging disaster impact, and the untimely warning of debris flow resulting from tailing dam failure, it is of great significance to study the mechanism of dam failure as well as the evolution law and affected area of debris flow for effective disaster prediction and risk assessment. We developed a 1:150 physical model for testing tailing dam failure and combined it with RAMMS (V1.7.0) debris flow software to investigate the mechanisms of tailing dam failure and the evolutionary patterns of rock flows in complex environments. Through the analysis and comparison of experimental data, we comprehensively summarized the consequences of disaster risk resulting from dam failure. The results show that the grain size distribution of the model sand should be moderate; the composition of the particle size distribution has a significant impact on the collapse morphology of the dam after failure. The saturation line is the lifeline for the stability of the wake reservoir, and its level determines the degree of saturation of the wake in the reservoir. The breach was at the midpoint of the crest of the dam. The inflow volume at the time of the breach was 0.313 m3. According to the flow ratio relationship, the inflow volume at breach occurrence was equivalent to 1.78 times the total amount of a 1000-year flood and 1.19 times the total amount of a probable maximum flood (PMF). Analysis of the surface flow field revealed that the region with the highest flow velocity extended from the toe of the dam to Shangdi village; the impact on the village of Shizhou was limited to the backflow of the dam break and the gradual sedimentation of the tailings.

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Experimental investigation of the flip-through impact: The generation mechanism and statistical characteristics

Shen,

Wei,

et al. 2024

Ocean Engineering

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Numerical study of the wave impacts generated in a wet dam break

Cited by 6 publications

References 45 publications

Research on Risk and Disaster Prediction of Tailings Dam Break in Complex Environments

Research on Risk and Disaster Prediction of Tailings Dam Break in Complex Environments

Study on the Evolution of Tailings Dam Break Disaster under Complex Environment

Experimental investigation of the flip-through impact: The generation mechanism and statistical characteristics

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