通过Fluent数值模拟软件针对4个掌子面施工通风隧道速度场进行模拟计算,根据规范要求,确定合理的通风参数.结果表明:采用直径为2 m的风管,风管末端与掌子面距离不应超过25 m,风管风速度为10 m·s-1时,通风效果满足规范要求.该结论为现场通风方案的设计提供了理论依据.%The construction ventilation with middle partition is used for inclined shaft and pressed ventilation for main tunnel in Guanjiao Tunnel.The velocity fields on construction ventilation for 4 working faces of Guanjiao Tunnel are simulated by using FLUENT software.According to the Technical Specification for Construction of Railway Tunnel (TB10204-2002) provisions,reasonable ventilation parameters are determined.The simulation results show that distance between end of air duct and outlet to working face is less than 25 m.Air ducts wind velocity is more than 10 m · s-1.The conclusion can provide reference value for construction ventilation schematic design.
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