关键词: 异质信息网络, 西南地区, 铁路建设, 灾害风险, 风险传播

Abstract: Railway construction in Southwestern China faces extremely complex and hazardous natural environments. Analyzing potential relationships among disaster risks is crucial for engineering design and safety assurance. To address multi-source heterogeneous unstructured disaster risk data from actual projects in Southwestern China, this paper constructs a heterogeneous information network to explore various latent relationships and disaster risk chains among geological, geographical, and environmental risks along railway projects. The proposed model treats disaster risks in high-risk railway sections as nodes and the latent relationships among risks as edges. Quantitative analysis of network topology indicators reveals potential associations among disaster risks, while network identification methods are employed to identify disaster risk chains. The results indicate that disaster risks along railway projects in Southwest China exhibit clustering characteristics, with some risks strongly correlated, implying a higher probability of cascading disasters in vulnerable regions. This paper provides scientific support disaster risk assessment in railway engineering construction.

Key words: heterogeneous information network, Southwestern China, railway construction, disaster risk, risk propagation