Abstract: The secondary disasters of underground mines caused by the earthquake have the character⁃ istics of strong correlation and complex evolution mechanism，which are easy to safety accidents. The lack of understanding of the internal relationship of the disaster chain is the core bottleneck restricting the work of disaster prevention and mitigation. Taking the earthquake-induced disaster system of an underground mine as the research object，the disaster chain analysis method is used to systematically sort out the damage path and evolution process of the earthquake to the underground mine. Firstly，the composition of disaster events is identified，and a disaster chain evolution model with 44 nodes and 113 edges is constructed. Then，based on the complex network theory，the disaster network model is established. By calculating the key parameters such as node degree value，node subnet number and edge vulnerability，the core control nodes and vulnera⁃ ble connection edges in the disaster network are accurately identified，and the potential risk levels of differ⁃ ent disaster events are defined. Based on the above analysis，the suggestions for disaster chain breaking and disaster reduction in the mine are put forward. The research results can provide theoretical basis and practi⁃ cal reference for the construction of earthquake disaster risk prevention and control system in the same type of underground mines.

Key words: non-coal underground mine, earthquake disaster chain, disaster events, complex networks