A Statistical Risk Assessment Model of the Hazard Chain Induced by Landslides and Its Application to the Baige Landslide

Landslides are usually caused by rainstorms and geological processes such as earthquakes and may have a massive impact on human production and life. The hazard chain of landslide–river blockage–outburst flood is the most common hazard chain caused by landslides. A database based on existing landslid...

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Bibliographic Details
Published in:Applied sciences 2023-03, Vol.13 (6), p.3577
Main Authors: Yang, Feng-Yuan, Zhuo, Li, Xiao, Ming-Li, Xie, Hong-Qiang, Liu, Huai-Zhong, He, Jiang-Da
Format: Article
Language:English
Subjects:
Accuracy
breaching flood
Chains
China
Dam stability
Dams
Downstream
Earthquakes
Flood discharge
Floods
Geological processes
hazard chain
Japan
landslide dam
Landslides
Landslides & mudslides
Mathematical models
Peak floods
Rain
Rainstorms
Risk assessment
river blockage
Rivers
Seismic activity
Seismology
Stability analysis
Statistical analysis
Storm damage
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Summary:Landslides are usually caused by rainstorms and geological processes such as earthquakes and may have a massive impact on human production and life. The hazard chain of landslide–river blockage–outburst flood is the most common hazard chain caused by landslides. A database based on existing landslide cases was established in this study to investigate the assessment formulas of the risk of river blockage, dam stability, and peak flood discharge after a dam has broken. A risk assessment model of the landslide–river blockage–breaching hazard chain was established, including the downstream vulnerability. The case of the Baige landslide verified the applicability of the model. This model can be used in a landslide-prone area to predict whether a relatively massive river blockage will form after the landslide occurs, whether the landslide dam formed by the river blockage will breach in a short time, and the impact of the outburst flood on the downstream area.
ISSN:2076-3417
2076-3417
DOI:10.3390/app13063577