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在隧道施工分隔通风方案设计中,中间隔板末端与工作面距离、风机与工作面距离、风机串联或并联通风是主要考虑因素。采用数值模拟方法,以关角隧道为例,分析了斜井设置中间隔板情况下风机串、并联对应的速度场,比较了串联或并联的通风效果,提出了中间隔板及风机出口与工作面距离建议值。结果表明:斜井长度大于300m时,风机串联通风效果比并联好;斜井长度较小时,并联通风效果比串联好。
In the design of tunnel construction ventilation program, the distance between the end of the intermediate partition and the working face, the distance between the wind turbine and the working face, and the parallel or parallel ventilation of the wind turbine are the main considerations. Taking the tunnel in Guanjiao as an example, the numerical simulation method was used to analyze the velocity field in parallel and parallel to the blower fan with the intermediate partition in the inclined shaft. The ventilation effect in series or in parallel was compared, and the outlet and work of the intermediate partition and fan were proposed Recommended distance from surface. The results show that when the length of inclined shaft is more than 300m, the ventilation effect of fan in series is more than that in parallel. When the length of inclined shaft is small, the effect of parallel ventilation is better than the series connection.