地铁自诞生之日起,就以其快捷便利、节能便宜以及运载量大等有利条件,成为了现代城市中不可或缺的重要交通运输工具。不过,地铁因人流密集、地下空间局促、内部构造复杂、地下与地面间距较长、连接点较少以及通风、排气能力有限等特点,导致 Since its birth, the Subway has become an indispensable and important means of transportation in modern cities due to its advantages such as quick and easy access, low energy consumption and large carrying capacity. However, due to the densely populated metro areas, the cramped underground space, the complicated internal structure, the long distance between the ground and the ground, the fewer connection points and the limited ventilation and exhaust capacity, the MTRC