城市隧道废气排放口设计常见环境问题与对策

以上海市隧道建设为例，介绍了隧道专用废气排放设施高风塔和低风口群两种设计形式的常见环境影响特征，并据此提出多种降低环境影响的对策措施，借助案例说明了专用废气排放口优化选址的方法。通过对高风塔和低风口的环境影响特征的对比分析，分别阐明了低风口和高风塔选用的适宜条件，并指出在适当条件下城市区域也可选用低风口群排风方案。

Common Environmental Problems in Exhaust Opening Design for Urban Traffic Tunnels and Countermeasures

Based on the case study of Shanghai city＇s tunnels construction, the characteristics of common environmental impact of two design forms for city tunnel exhaust facilities i.e. tall and low exhaust towers are discussed and then various countermeasures for reduction of these effects are presented. Furthermore, a method of exhaust site selection optimization is illustrated with a case example. Through comparative analysis of environmental impact characteristics between tall and low exhaust towers, the conditions that their application is suitable for are expounded, respectively. It is pointed out that scheme of low exhaust tower groups can be adopted in urban areas under a certain conditions.