Influence of Ventilation And Decentralized Purification on Pollutant Control in Urban Highway Tunnels without Exhaust Shaft

Limited by multiple factors, such as land use planning, landscape coordination and environmental standards, the ventilation conditions of urban highway tunnels are insufficient, therefore joint control purification becomes a necessary solution. In this study, effect number, location decentralized equipment, tunnel rate on pollution in studied using one-dimensional calculation. The results show that arrangement equipment can reduce design to certain extent. When is arranged, maximum NO 2 concentration be reduced up 30.9%, average 18.2% compared with without purification. arranged rear section conducive reducing pollutants at exit, while middle tunnel.