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定义了描述隧道机械通风系统空气动力特性的重要参数诱导比，以射流风机集中布置方式模拟实测了列车单行和交会时有害气体的时间变化和浓度分布，得出了保证隧道内空气卫生标准的风机台数和通风方式。
The induction ratio of the important parameters describing the aerodynamic characteristics of the tunnel mechanical ventilation system is defined. The time variation and concentration distribution of the harmful gases in the train single lane and rendezvous are simulated by the centralized arrangement of the jet fans, and the fan that ensures the air hygienic standard in the tunnel is obtained Number of units and ventilation.