Risk analysis and emergency actions for Hongshiyan barrier lake

Zhou, Xingbo; Chen, Zuyu; Yu, Shu; Wang, Lin; Deng, Gang; Sha, Peijun; Li, Shouyi

doi:10.1007/s11069-015-1940-2

Cited by 30 publications

(10 citation statements)

References 27 publications

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“…Several computer programs based on sedimentation dynamics use this relationship, such as BREACH (Meyer‐Peter & Müller, ), BEED (Brown, ; Einstein, ), and MIKE11 (Engelund & Hansen, ). Zhou, Chen, Yu, et al () compared the predicted soil erosion rates from 16 power relationship models with the measured rates in Tangjiashan barrier lake.…”

Section: Advances In Flood Evaluation Methodsmentioning

confidence: 99%

Evaluation of barrier lake breach floods: Insights from recent case studies in China

et al. 2019

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Historically, China has experienced frequent barrier lake breach hazards, and several cases have been monitored during their occurrences using complete breach flood hydrographs. These have enabled the analysis of dam breaches to be improved by merging hydraulics and soil mechanics expertise. Some novel improvements to analytical methods have also been published. This study presents the authors' proposed hyperbolic soil erosion and lateral enlargement models, together with a numerical algorithm that enables easy calculation of the breach flood hydrograph. In general, the peak flows calculated using this improved method agree with field measurements and are less sensitive to input parameters. The research outcomes are presented on an Excel spreadsheet (DB‐IWHR, online download available), and these are self‐explanatory with minimal tutorials. This software will be of particular use in an emergency situation, when it is necessary to quickly evaluate the breach flood. This study reviews four large‐scale barrier lake breaches; the Yigong breach which documented a peak flow close to 100,000 m3/s and the recent Baige breaches featuring burst recurrences over a month‐long period. This article is categorized under: Science of Water> Water Extremes Engineering Water > Planning Water

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Section: Advances In Flood Evaluation Methodsmentioning

confidence: 99%

Evaluation of barrier lake breach floods: Insights from recent case studies in China

et al. 2019

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“…The epicenter of the earthquake was located at 27.11 • N, 103.35 • E, and the landslide is located 8.8 km southeast from the epicenter (Luo et al, 2019). The landslide dam holds a maximum water storage of 2.6 × 10 8 m 3 (Zhou et al, 2015). The breaching of this giant dam will not only pose a high threat to the residents who live around it, but will also bring a possibility of damage to other hydropower dams downstream.…”

Section: Hongshiyan Landslide Dammentioning

confidence: 99%

“…After-landslide remote sensing image Gaofen-1 satellite 2 m resolution Pre-landslide DEM SRTM V3 30 m resolution Repose angle of the debris Relative case records Rough estimation Elevation of the riverbed Sampling from DEM Rough estimation is about 3 m (Zhou et al, 2015), the elevation of the dam bottom is 1111 m.…”

Section: Input Data Source Descriptionmentioning

confidence: 99%

Using a single remote-sensing image to calculate the height of a landslide dam and the maximum volume of a lake

Zou

Zhou

Wang

et al. 2022

Nat. Hazards Earth Syst. Sci.

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Abstract. Landslide dams are caused when landslide materials block rivers. After the occurrence of large-scale landslides, it is necessary to conduct a large-scale investigation of barrier lakes and a rapid risk assessment. Remote sensing is an important means to achieve this goal. However, at present, remote sensing is only used for the monitoring and extraction of hydrological parameters, without predicting the potential hazard of the landslide dam. The key parameters of the barrier dam, such as the dam height and the maximum volume, still need to be obtained based on a field investigation, which is time consuming. Our research proposes a procedure that is able to calculate the height of the landslide dam and the maximum volume of the barrier lake using a single remote-sensing image and a pre-landslide DEM. The procedure includes four modules: (a) determining the elevation of the lake level, (b) determining the elevation of the bottom of the dam, (c) calculating the highest height of the dam and (d) predicting the lowest crest height of the dam and the maximum volume. Finally, a sensitivity analysis of the parameters used during the procedure and an analysis of the influence of the image resolution is carried out. This procedure is mainly demonstrated through the Baige landslide dam and the Hongshiyan landslide dam. A single remote-sensing image and a pre-landslide DEM are used to predict the height of each dam and the key parameters of the dam break, which are in good agreement with the measured data. This procedure can effectively support quick decision making regarding hazard mitigation.

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“…Step 1: According to the hydraulic relationship, one BNs model was created to perform the risk transmitting progress of the cascade dam system. In this study, it was necessary to use historical data, computational formulas, and expert experience of the relative information like experiments, simulations, analytical models, and similar previous studies [6,15,[26][27][28]35]. In the BN model, the sensitivity mode was used to obtain the risk factors and original continuous breaking failure path.…”

Section: Risk Analysis Of Cascade Dam Systemmentioning

confidence: 99%

Flood Risk Analysis for Cascade Dam Systems: A Case Study in the Dadu River Basin in China

Cai

Zhu

Peng

et al. 2019

Water

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To quantify the flood risks in cascade dam systems, it is critical to analyze the risk factors and potential breaking failure paths. In this study, Bayesian networks (BNs) were applied to create a flood risk analysis model for a cascade dam system. Expert experiment, historical data, and computational formulas were employed to estimate the prior probability and original conditional probability tables (CPTs) in the BN model; sensitivity analysis was used to ensure the original continuous breaking failure path in the system. To avoid the possible misperceptions of the probability of a certain event, Dam Breach Analysis Model (DB-IWHR) 2014 software and the flood regulation method were used to simulate the dam breaking progress. The posteriori continuous breaking failure paths were obtained, and then the original CPTs were refined based on the new evidence. The proposed method was applied to the Bala-Busigou-Shuangjiangkou (BL-BSG-SJK), which is located upstream of the Dadu River basin in China. The results show that three continuous breaking failure paths could be identified in the researched cascade dam system. A new BN model was created to determine the failure probability of the cascade dam system under the three continuous breaking failure paths. This analytical method may also be useful for other similar cases.

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Risk analysis and emergency actions for Hongshiyan barrier lake

Cited by 30 publications

References 27 publications

Evaluation of barrier lake breach floods: Insights from recent case studies in China

Evaluation of barrier lake breach floods: Insights from recent case studies in China

Using a single remote-sensing image to calculate the height of a landslide dam and the maximum volume of a lake

Flood Risk Analysis for Cascade Dam Systems: A Case Study in the Dadu River Basin in China

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