分水岭特长公路隧道的斜井送排式通风系统设计

发布时间：2018-05-27 06:04

本文选题：特长公路隧道 + 单向坡　；参考：《公路》2014年04期

【摘要】：单向坡特长公路隧道通风系统区别于人字坡隧道的特点在于其左右洞需风量不平衡,上坡隧道的需风量远大于下坡隧道。为了设计单向坡隧道的通风系统,计算了左右洞需风量,分析了其特点及设计过程中应考虑的因素,并对土建构造物的设计要点进行了研究,得出上坡隧道以稀释烟雾的需风量控制,且远大于下坡隧道,以稀释空气中异味控制的需风量;上坡隧道可采用竖井或斜井分段纵向通风模式,以降低隧道主风道内的风速至经济风速区间内;下坡隧道可采用经济节能、控制简单的纯射流风机纵向通风模式;上坡隧道的排风风道宜联通下坡隧道,作为下坡隧道火灾时排烟;单向坡隧道的通风竖井、斜井及地下风机房等应尽可能布置于上坡隧道的外侧。
[Abstract]:The characteristic of ventilation system of one-way slope extra-long highway tunnel is that the air demand of the left and right tunnel is unbalanced, and the air demand of the upward slope tunnel is much larger than that of the downhill tunnel. In order to design the ventilation system of one-way slope tunnel, the required air volume of the left and right tunnel is calculated, the characteristics and the factors to be considered in the design process are analyzed, and the design essentials of the civil structure are studied. It is concluded that the upstream tunnel can be controlled by diluting the required air volume of smoke, which is much larger than the downhill tunnel, to dilute the air demand of the special smell control in the air, and the vertical ventilation mode of the vertical shaft or inclined well can be adopted in the upward slope tunnel. In order to reduce the wind speed from the main wind tunnel to the economic wind speed range, the downhill tunnel can adopt economic energy saving, control simple vertical ventilation mode of pure jet fan, and the exhaust air passage of the up slope tunnel should be connected with the downhill tunnel, The ventilation shaft, inclined shaft and underground fan room of one-way slope tunnel should be arranged as far as possible outside the upper slope tunnel.
【作者单位】：浙江工业大学建筑工程学院;
【分类号】：U453.5

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