Research on ventilation of cross-river section of Wuhan Rail Transit Line 7

Presents the operational ventilation design for cross-river section of Wuhan Rail Transit Line 7 which is a highway and railway highway-metro cross-river tunnel. According to the fire condition, studies the advantages and disadvantages of smoke exhaust mode, air leakage from air duct, and fan configuration of four schemes. Confirms five section smoke extraction scheme. Simulates the typical fire conditions. The scheme can meet the requirements of fire and smoke extraction.