Abstract: Research on the simulation of sudden water flow in mine roadway and emergency evacuation path planning currently faces several challenges, including low efficiency and poor accuracy in manually inputting roadway topology relationships, qualitative inundation simulations, and a lack of precise simulation of the dynamic diffusion process of water flow. This study proposes a design scheme for a mine water hazard inundation simulation analysis system. During the generation of roadway topology relationships, an undirected graph was automatically created using roadway and node data, allowing the handling of implicit adjacency relationships. The intersection of arcs was calculated using PostGIS functions. For inundation simulation, the dynamic wave simulation method of the Storm Water Management Model (SWMM) was applied. Emergency evacuation path planning utilized Dijkstra's algorithm based on time-varying networks, considering the impact of water depth on escape speed. The Dijkstra algorithm was divided into three stages: data preprocessing, core computation, and post-processing. Taking Inner Mongolia Shenlong Mining Co., Ltd. as a case study, roadway topology relationships were created, and parameters such as flood volume were set to simulate sudden water influx events. The results demonstrated that the mine water hazard inundation simulation analysis system accurately reflected the spread of water flow at different time nodes. The planned evacuation paths successfully avoided areas with high water levels and difficult terrain, and the escape times were consistent with actual conditions.