公路隧道竖井送排式通风排风口角度优化模型试验研究  

Study on the optimum angle between the exhausting duct orifice and the longitudinal axis of a highway tunnel with longitudinal ventilation through shafts by model test

作　　者：方磊 谢永利[2] 李宁军[2] 

机构地区：[1]广州市建设科学技术委员会办公室,广州510030 [2]长安大学公路学院,西安710064

出　　处：《现代隧道技术》2005年第5期32-36,共5页Modern Tunnelling Technology

摘　　要：文章应用模型试验于公路隧道竖井送排式纵向通风中,并对排风口与隧道轴向夹角对排风段隧道平均风速的影响进行了测试,研究不同排风口角度和不同风速下的变化规律。结果表明,排风口与隧道轴向夹角对排风动力有较大影响,且随着排风段隧道平均风速增大,排风口角度的影响越大。因此排风口与隧道轴向夹角宜取隧道结构和安全性允许条件下的最小值。Applying model experiment for a highway tunnel with longitudinal ventilation through shafts, authors of the paper measured the average wind velocities in the exhausting section of the tunnel under different angles of intersection between the exhausting duct and the tunnel axis. Results showed that the angle of intersection affects greatly the exhausting power. The influence increased with the wind velocity in the exhausting section of the tunnel. So the angle between the exhausting duct orifice and the tunnel axis is recommended to take a minimum value under the permission of tunnel structure and security.

关 键 词：公路隧道 模型试验 竖井送排式通风 排风口角度 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]