横通道对双洞互补式公路隧道通风效果的影响

Influence of Cross Channel on Ventilation Effect of Highway Tunnel with Double Ventilation Hole

以采用双洞互补式通风方式的某公路隧道为对象,运用ANSYS软件,对不同数量、不同位置的横通道设置条件下隧道内速度场进行三维数值模拟,对比分析了横通道对公路隧道双洞互补式通风效果的影响。研究结果表明,对于长度为1000 m的隧道,3条横通道比2条横通道的通风效果好,横通道间距100 m比间距50 m的通风效果好,研究结论为可为类似隧道的运营通风方案确定提供参考。

Taking a highway tunnel with complementary ventilation mode in double hole as an object, three-dimensional wind field in the tunnel under different conditions is simulated by ANSYS software. The influences of horizontal channel quantity and location on ventilation effect of highway tunnel with double hole are compared and analyzed. Research results show that for the tunnel length of 1 000 m, the ventilation effects of three cross channels are better than that of two cross channels, meanwhile the ventilation effects of cross channel spacing is 100 m are better than that of cross channel spacing is 50 m. The conclusions of this paper could be taken as reference for ventilation scheme determination of similar tunnel.