Presenter
Dr. Meng Yang, Nanjing Hydraulic Research Institute
Co-author(s)
Dr. Shengyao Mei, Nanjing Hydraulic Research Institute
Dr. Lucheng Zhang, Nanjing Hydraulic Research Institute
Dr. Hongning Lu, Nanjing Hydraulic Research Institute
Prof. Qiming Zhong, Nanjing Hydraulic Research Institute
Sub-theme
3. Building Resilience for Disaster Prevention and Mitigation
Topic
3-3. Nature-based Solutions for water-related disaster prevention and mitigation
Body
Landslide dam are extremely dangerous phenomena and widely distributed in more than 1400 places all over the world. Landslide dam failure disasters can have catastrophic consequences, causing loss of life, property damage, and environmental degradation. The failure of a single landslide dam can trigger a chain reaction of events, leading to the failure of downstream flooding, landslides, and other hazards. Scientific risk assessments of landslide dam breach process is of great importance for the pre-disaster prevention and post-disaster rescue. The risk assessment of dam failure disaster chains is a complex process that involves the identification of potential failure modes, the analysis of their likelihood and consequences, and the estimation of the risk to human life, property, and the environment. In this article, we review the current state of knowledge on risk assessment of landslide dam failure disaster chains, focusing on the key concepts, methods, and challenges involved in the process. We first discuss the factors that contribute to landslide dam failure and the breach mechanisms of landslide dam failure propagation, highlighting the importance of understanding the breach process of landslide dams in a river system. We then review the different approaches to risk assessment, including probabilistic and scenario-based methods, and their strengths and limitations. Finally, we discuss the challenges of data collection, modeling, and uncertainty quantification in risk assessment and the need for interdisciplinary collaboration and stakeholder engagement. Our review suggests that risk assessment of landslide dam failure disaster chains is a crucial step in reducing the potential consequences of these events. However, it requires a comprehensive understanding of the physical, social, and institutional factors that influence risk and the adoption of a proactive and adaptive approach to risk management. Further research is needed to address the remaining uncertainties and to develop robust and integrated risk assessment frameworks that can inform decision-making and support effective emergency response.