摘要
文章从影响高原地区特长公路隧道通风的海拔高度和纵坡这两个因素出发,根据相关文献中关于海拔高度系数的实测结果,以青海大力加山特长隧道为依托,对规范中的海拔高度系数进行了修正,进而重新计算了隧道需风量,并结合纵坡对车速的影响,合理确定了控制工况车速下的需风量,为下一步通风方案的制定奠定了重要基础。
Altitude and longitudinal slope are two factors affecting ventilation design of an extra-long highway tun- nel in a plateau area. Based on provided field-measured data regarding the altitude coefficient, and using the Dali- jia Mountain Tunnel in Qinghai Province as an example, the altitude coefficients given in the specifications were modified and the required air volume was recalculated. Considering the impact of the longitudinal slope on vehicle speed, the required air volume under the condition of controlled vehicle speed was determined reasonably, providing an important basis for the ventilation scheme.
出处
《现代隧道技术》
EI
CSCD
北大核心
2017年第4期167-172,共6页
Modern Tunnelling Technology
关键词
高原
隧道
需风量
海拔系数
纵坡
Plateau
Tunnel
Required air volume
Altitude coefficients
Longitudinal slope
