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为了解防烟门(即在隧道避人(车)洞口加设的挡烟建筑物)的防烟效果,我们会同有关兄弟单位在贵昆线的甲号隧道、川黔线的乙号、京承线的丙号隧道作了一些试验,现分述于后。 (一)三座隧道防烟门的试验概况 (1)甲号隧道甲号隧道全长2714米,靠东口(即低洞口)有一段线路在曲线上,洞内线路最大纵坡9.6‰,其中有十二个避车洞设有防烟门。通风机设在低洞口的一侧。采样点选在工人同志反映烟气浓度最大地段的一个避车洞(距低洞口2020米)。该处防烟门用砖砌成,并在其上留高180厘米、宽78厘米的小木门一扇,还在其旁开一个高50厘米、宽30厘米窗孔用玻璃镶嵌作为了望孔。如图示。这种简单的
In order to understand the anti-smoking effect of anti-smoking doors (that is, anti-smoking buildings added to avoid tunnels in tunnels), we will work together with relevant brothers in No. A Tunnel on the Guijun Line, Conductor No. Tunnel No. made some tests, are described later. (1) Test Overview of Three Tunnel Smoke-proof Doors (1) Tunnel A, with a total length of 2714 meters, has a section of the curve on the east exit (ie, the lower opening). The maximum lengthwise slope of the tunnel is 9.6 ‰, Twelve of these shelters have smoke-free doors. The ventilator is on the low side of the hole. Sampling Pick a refuge cave (at a distance of 20,000 meters from the low hole) where the gay worker reflects the area with the highest smoke concentration. The smoke-proof door here is made of brick and leaves a small wooden door of 180 cm in height and 78 cm in width, with a 50-cm-high, 30-cm- . As shown. This simple