新通风规范对公路隧道需风量计算的影响分析  

Analysis of the Influence of the New Ventilation Code to the Ventilation Design of Motorway Tunnel in Mountainous Area

作　　者：冯志华[1] 程飞[1] 赖金星[1] 周慧[1] 刘厚全[1] 

机构地区：[1]长安大学公路学院,西安市710018

出　　处：《公路》2017年第3期229-235,共7页Highway

基　　金：陕西省自然科学基金项目;项目编号2014JM7245

摘　　要：新的公路隧道通风设计细则于2014年7月颁布,与上一规范相隔15年之久,在CO排放基数、CO要求浓度等方面发生了巨大变化,在隧道通风设计方面,直接影响设计需风量的变化。总结了新旧规范主要差异之处,并就设计阶段通风量计算与运营阶段的通风管理工作变化展开影响性分析。选取了1km、2km、3km、4km、5km等5条山区高速公路隧道,假定其通风方式均为纵向式通风,并且其他条件一致,分别计算新旧规范下对应的设计需风量。计算表明,新规范下长度小于3km的长隧道需风量增幅较大;长度为3km的隧道设计需风量几乎不变;长度在3~5km的隧道需风量明显减少。The highway tunnel ventilation code is the basis of ventilation design.Compared with the previous ventilation code which was published in 1999,the new highway tunnel ventilation design code,promulgated in July 2014,have taken great changes in the aspects of the CO emission base,CO concentration standard and other ventilation requirements,which have a great influence on the required air volume during the ventilation design work.The main differences have been summarized and the influence on the design stage of ventilation calculation and operation stage of the ventilation management have been concluded.Five mountainous motorway tunnels with length of 1km,2km,3km,4km,and 5km are selected to conduct the required air volume according to different ventilation codes,assuming that the ventilation mode are longitudinal ventilation and all the other conditions are in the same.It is found that the required air volume increases a lot in the tunnels with length of 1km and 2km in the new ventilation code,the required air volume almost keeps in same in the tunnel with a length of 3km;and the required air volume is less than before in the tunnels with length of 4km and 5km.

关 键 词：高速公路隧道 通风设计 需风量 运营通风 分析 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]