地铁隧道通风中活塞风和自然风的互补应用与研究

发布时间：2019-04-01 09:11

【摘要】：针对目前现行地铁通风工程中，区间隧道通风换气主要采用由机车引起的活塞风为主和由两端竖井提供自然风作为辅助通风的传统模式，提出通过改造土建施工过程中留下的竖井或者新建自然风井，合理排布风井，充分利用自然风对区间隧道全面通风换气，将原有区间分成若干段，全程采用自然风和活塞风互补通风模式，减少区间隧道风机的应用，提高通风换气质量，减少电能消耗。在参考了国内众多城市中已运行地铁交通工程区间隧道通风系统的基础之上，借助地铁区间隧道通风中自然风的通风经验，深入研究区间隧道通风系统中自然风通风数值的各种因素之间关联，推导出地铁区间隧道多竖井条件下自然风的修正计算方法；同时结合地铁活塞风的特殊性，根据活塞风的作用范围并和自然风的通风原理，推导出竖井的布设合适距离。研究中阐述地铁区间隧道中“复合风井”（机车正常运行中自然风井作为活塞风送排风作用，而出现事故时，自然风井作为排烟风井和自然风井共同作用）排布的可能性，混合风井将隧道划分成若干段，分析了新加竖井引入的自然风对区间隧道中机车引起活塞风大小的影响，以及火灾条件下分段排烟效果，同时考虑研究控制各段自然风大小，消除火灾中烟雾湍流现象，提出多竖井中“间隔设置”辅助风机的方法，，提高排烟能力和控制自然风风速大小的竖井排列模式，提高区间隧道的通风换气质量，大量利用自然风换气，减少机车空调的耗能，为日后地铁节能提供重要依据。
[Abstract]:in that current subway ventilation project, the ventilation and ventilation of the section tunnel mainly adopt the piston wind caused by the locomotive and the traditional mode of providing natural wind to the vertical shaft as the auxiliary ventilation, The wind well is reasonably arranged, the natural wind is fully utilized to fully ventilate and ventilate the section tunnel, the original interval is divided into a plurality of sections, the natural wind and the piston wind complementary ventilation mode are adopted in the whole process, the application of the section tunnel fan is reduced, the ventilation and ventilation quality is improved, and the electric energy consumption is reduced. On the basis of reference to the ventilation system of the subway traffic engineering section in many cities of the country, by means of the ventilation experience of the natural wind in the tunnel ventilation of the subway section, the relationship between the factors of the natural wind ventilation value in the section tunnel ventilation system is studied. The calculation method of natural wind in the multi-shaft condition of the subway tunnel is derived, and the proper distance of the shaft is deduced in the light of the particularity of the wind of the subway, according to the action range of the piston wind and the ventilation principle of the natural wind. in that study, the "composite air well" (natural wind well in normal operation of the locomotive as the air and air discharge of the piston in the normal operation of the locomotive) is describe in the study, and when an accident occurs, the natural wind well is the possibility of the arrangement of the smoke exhaust wind well and the natural wind well, and the mixed air well divides the tunnel into a plurality of sections, The influence of the natural wind introduced by the newly-added shaft on the size of the piston wind caused by the locomotive in the interval tunnel and the effect of the staged smoke exhaust under the fire condition are analyzed, and the natural wind size of each section is considered to be controlled, and the smoke turbulence phenomenon in the fire is eliminated. The method of the "interval setting" auxiliary fan in the multi-shaft is proposed, the vertical shaft arrangement mode for improving the smoke exhaust capacity and controlling the wind speed of the natural wind is improved, the ventilation and ventilation quality of the section tunnel is improved, the natural wind is used for ventilation, the energy consumption of the air conditioner of the locomotive is reduced, and the important basis for the energy conservation of the subway in the future is provided.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U453.5

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