Ventilation corridor construction is a new way to deal with haze pollution and it is the breakthrough and development of the idea and method of haze control. In this regard, based on the mechanism and conditions of urban ventilation corridor construction, the construction of urban ventilation corridor was evaluated. The results found that the size of the city, the strength of the wind, the conditions of the corridor, the environmental requirements of the periphery area and the intensity of pollution are the main factors affecting the haze control by ventilation corridor, and these factors correspondingly become the important conditions for the construction of the ventilation corridor.To reduce construction costs,the construction of ventilation corridors needs to be fully integrated with the natural characteristics of the city.Taking Xi′an city as an example and based on the cost-benefit analysis, the benefit of the economic feasibility was conducted.

ventilation corridor; haze control; ground fissure; benefit evaluation; Xi′an city雾霾频发，引发了各界对治污减霾的大思考。人们深刻地认识到霾污染的产生与人类的发展模式有关，这使得人们敢于直面人为因素；同时，人们也注重利用自然规律来解决霾污染问题。通风廊道理念的提出，就是人们在对自然因素思考的基础上利用风能治理霾污染，即将自然风引入城市空间，增加空气流动，稀释城市空间中的物质成分，利用风力将城市中的污染物质带走，继而达到净化空气、提高空气质量、改善城市环境的目的。