Research on the construction ventilation scheme of concealed subway station

With the development of underground transportation, in order to reduce impact on surrounding environment and traffic, Hejiaying subway island station adopts concealed excavation method. During construction process, considering method, tunnel layout, ventilation requirements, working face as a multi-conductor cave, more stringent requirements are put forward for tunnel. Through combination theoretical calculation numerical simulation, method suitable actual conditions at site was developed. After applying scheme practice, feasibility verified through determination field data, improvement personnel achieved, which has certain reference value similar projects.