To be specific, the concept of "disaster chain" was first proposed by Z. Guo , which is usually used to describe the phenomenon in which a series of natural hazards occur sequentially, including the causal chain, the homologous chain, the mutually exclusive chain, and the event chain. With the continuous development of catastrophology, the concept of disaster chain is updated and redefined to cope with more complex disaster scenarios . Present studies mainly focus on the secondary disaster chain triggered by large-scale regional natural hazards such as earthquakes, typhoons, and landslides.