Characteristics of Ventilation Systems for Long Tunnels. (Research on the Concentration Distribution and Leakage Ratio of Longitudinal Ventilation Systems with Supply and Exhaust Shafts in Long Tunnels).

Abstract

Research was carried out to study the leakage characteristics of pollutants, contained in the exhaust gas emitted by motor vehicles, from exit portals of long road tunnels which have longitudinal ventilation systems with supply and exhaust shafts. Apart from theoretical studies, an actual one-way traffic tunnel, 6200 m in length, was studied as well.