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问题18两条单线区问隧道之间为什么要设联络通道,隧道连贯长度不大于600m的要求是如何确定的? 否:《规范》19.1.22条规定,“两条单线区间隧道之间,当隧道连贯长度大于600m时,应设联络通道, 并在通道两端设双向开启的甲级防火门”,一是为沟通两单线区间隧道,二是为分隔成两个独立的防火防烟分区,当列车在一侧区间隧道内发生火灾等灾害、事故时, 人员可以通过附近的联络通道疏散至相邻的非事故隧道内,再步行或乘坐救援列车疏散到安全地带。由于绝大多数地铁区间不会短于600m,所以实际上规定了两条单线区间的隧道间,一般至少设一处联络通道。
Question 18 Why do two single-lane interrogation tunnels require inter-channel access and how long is the requirement for a tunnel with a length of not more than 600m? No: Article 19.1.22 stipulates that “between two single-lane tunnels, when Tunnel length of more than 600m connection should be set up contact channels, and open at both ends of the channel to open two-way fire doors ”, one for the communication between two single-line tunnel, the second is divided into two independent fire and smoke partition, When a train encounters a disaster such as a fire in a tunnel on one side of the train, personnel may be evacuated to an adjacent non-accident tunnel through a nearby liaison channel and then walked or rescued by a rescue train to a safe place. Since the vast majority of metro sections will not be shorter than 600m, in fact, there are two tunnels with single-line sections, and at least one connecting channel is generally provided.