本文主要介绍通风方式为集中排风型的双车道同向交通隧道,在车辆行驶活塞作用下峒口的污染空气漏出率与交通条件、集中排风井位置和排风率有关。通过模型试验研究来寻求它们之间的定量关系,并进一步将模型试验结果与实体隧道测定值作比较,为道路隧道峒口环境评价提供污染量依据。 In this paper, we mainly introduce the two-lane traffic tunnel with ventilation mode as the centralized exhaust type. The leakage rate of contaminated air at the port under the driving piston of the vehicle is related to the traffic conditions, the location of the exhaust ventilation center and the exhaust ventilation rate. Through the model test research to find the quantitative relationship between them, and further comparison between the model test results and the physical tunnel measured values, to provide the basis for pollution assessment of road tunnel mouth environment.