Dam-break flood risk assessment and mitigation measures for the Hongshiyan landslide-dammed lake triggered by the 2014 Ludian earthquake

Xu, Fu; Yang, Xing-guo; Zhou, Jia‐wen

doi:10.1080/19475705.2016.1269839

Cited by 30 publications

(19 citation statements)

References 26 publications

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“…Hydraulic models, for example, HEC‐RAS (USACE, ), Delft3D (Deltares, ), MIKE FLOOD (DHI Technologies, ), and LISFLOOD‐FP (Bates and De Roo, ), are commonly used to simulate flooding events ( e.g ., Horritt and Bates, ; Haile and Rientjes, ; Kia et al ., ; Xu et al ., ). Although these tools can simulate water depths, they require information about the event hydrological characteristics and riverine morphology.…”

Section: Introductionmentioning

confidence: 97%

“…However, timely information about floodwater depth is important for directing rescue and relief resources, determination of road closures and accessibility, and post-event analysis of property damage (Islam and Sadu, 2001;Nadal et al, 2009). Hydraulic models, for example, HEC-RAS (USACE, 2017), Delft3D (Deltares, 2017), MIKE FLOOD (DHI Technologies, 2017), and LISFLOOD-FP (Bates and De Roo, 2000), are commonly used to simulate flooding events (e.g., Horritt and Bates, 2002;Haile and Rientjes, 2005;Kia et al, 2012;Xu et al, 2016). Although these tools can simulate water depths, they require information about the event hydrological characteristics and riverine morphology.…”

Section: Introductionmentioning

confidence: 99%

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Estimating Floodwater Depths from Flood Inundation Maps and Topography

Cohen

Brakenridge

Kettner

et al. 2017

J American Water Resour Assoc

101

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Information on flood inundation extent is important for understanding societal exposure, water storage volumes, flood wave attenuation, future flood hazard, and other variables. A number of organizations now provide flood inundation maps based on satellite remote sensing. These data products can efficiently and accurately provide the areal extent of a flood event, but do not provide floodwater depth, an important attribute for first responders and damage assessment. Here we present a new methodology and a GIS‐based tool, the Floodwater Depth Estimation Tool (FwDET), for estimating floodwater depth based solely on an inundation map and a digital elevation model (DEM). We compare the FwDET results against water depth maps derived from hydraulic simulation of two flood events, a large‐scale event for which we use medium resolution input layer (10 m) and a small‐scale event for which we use a high‐resolution (LiDAR; 1 m) input. Further testing is performed for two inundation maps with a number of challenging features that include a narrow valley, a large reservoir, and an urban setting. The results show FwDET can accurately calculate floodwater depth for diverse flooding scenarios but also leads to considerable bias in locations where the inundation extent does not align well with the DEM. In these locations, manual adjustment or higher spatial resolution input is required.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Estimating Floodwater Depths from Flood Inundation Maps and Topography

Cohen

Brakenridge

Kettner

et al. 2017

J American Water Resour Assoc

101

View full text Add to dashboard Cite

show abstract

“…After several structural and non-structural measures are formulated and designed to cope with the breakout landslide, it is imperative to undertake a flood risk analysis [22][23][24][25] for selecting an appropriate and cost-effective emergency disposal solution from the standpoint of minimizing losses.…”

Section: Non-structural Measuresmentioning

confidence: 99%

Emergency Disposal Solution for Control of a Giant Landslide and Dammed Lake in Yangtze River, China

Chen

Zhao

Zhou

et al. 2019

Water

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Although landslide early warning and post-assessment is of great interest for mitigating hazards, emergency disposal solutions for properly handling the landslide and dammed lake within a few hours or days to mitigate flood risk are fundamentally challenging. In this study, we report a general strategy to effectively tackle the dangerous situation created by a giant dammed lake with 770 million cubic meters of water volume and formulate an emergency disposal solution for the 25 million cubic meters of debris, composed of engineering measures of floodgate excavation and non-engineering measures of reservoirs/hydropower stations operation. Such a disposal solution can not only reduce a large-scale flood (10,000-year return period, 0.01%) into a small-scale flood (10-year return period, 10%) but minimize the flood risk as well, guaranteeing no death raised by the giant landslide.

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“…f 当R和S均为正态分布时, 可靠指标与结构安全系数K 存在如下关系: [35,36] , 目前国内外相关研究成果非常丰富, 如用于溃口洪水分析的BREACH模型 [37] 、李雷模型 [29] 、陈生水模型 [38] , BREACH模拟的溃口流量过程见图2.…”

Section: 溃坝模式和溃坝路径识别unclassified

Research progress and its practice of key techniques for dam risk assessment and management

Cai

et al. 2018

Sci. Sin.-Tech.

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Dam-break flood risk assessment and mitigation measures for the Hongshiyan landslide-dammed lake triggered by the 2014 Ludian earthquake

Cited by 30 publications

References 26 publications

Estimating Floodwater Depths from Flood Inundation Maps and Topography

Estimating Floodwater Depths from Flood Inundation Maps and Topography

Emergency Disposal Solution for Control of a Giant Landslide and Dammed Lake in Yangtze River, China

Research progress and its practice of key techniques for dam risk assessment and management

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