公路隧道空气质量与能见度相关性试验研究

Experimental study on correlation between air quality and visibility in highway tunnel

公路隧道由于纵横比大、空间受限,加之在运营过程中车流结构复杂、车流量大,导致隧道空气质量差,造成能见度降低影响行车安全。因此本文采用室内试验的方法,研究了隧道空气质量与能见度的相关性。得出以下结论:公路隧道能见度的影响因子主要为细粒子(PM、PM)和相对湿度,且在不同相对湿度区间,均使用PM的数据与能见度建立基于指数函数的回归模型具有更好的相关性,基于此构建了隧道空气质量与能见度的相关模型,提出了一种运用隧道空气质量来定量计算能见度的方法。

Due to the large aspect ratio, limited space, complicated traffic structure and large traffic flow in the operation process of highway tunnel, the air quality of tunnel is poor, which leads to the reduction of visibility and affects driving safety. Therefore, this paper studies the correlation between tunnel air quality and visibility by indoor test. The following conclusions are drawn: The influencing factors of highway tunnel visibility are mainly fine particles(PM, PM) and relative humidity, and in different relative humidity intervals, PMdata and visibility are used to establish a regression model based on exponential function, which has a better correlation. Based on this, a correlation model between tunnel air quality and visibility is constructed. This paper presents a method to quantitatively calculate visibility using tunnel air quality.