Influence of train operating organization onairflow exchange volume of vent shafts

Taking a suburban railway project as an example, simulates the airflow exchange volume of vent shafts in the underground station by establishing a 1D numerical simulation model. Under different train operating organization conditions, studies the influences of design parameters such as vehicle speed (80 to 120 km/h), train density (5 to 30 pairs/h) and dwell time (20, 30, 40 s) on the inlet and outlet air rate of vent shafts. The result of ANOVA (analysis of variance) indicates that the train density is the most significant impact factor for the airflow exchange volume of vent shafts. Obtains the variation curve of the inlet and outlet air rate of vent shafts with train density based on the quadratic polynomial regression, which can be used for the prediction and calculation of airflow exchange volume of vent shafts in similar suburban railway underground stations.