兰渝铁路西秦岭特长隧道司乘人员舒适性分析

Passenger and Steward Comfort Analysis in Xiqinling Tunnel on Lanzhou-Chongqing Railway

文章根据国内研制的一维可压缩非定常不等熵流动特征线法隧道压力波动分析工具,预测了西秦岭特长隧道采用56.54m2、53.06m2、49.12m2三种不同净空面积值和时速200km条件下,列车通过隧道时的车内外压力波动规律,进行了舒适性的判定,得出了西秦岭特长隧道采用较小净空面积满足国内舒适性标准的结论。文章结论为西秦岭特长隧道净空参数确定和采用不同施工工艺提供了空气动力学依据。

Xiqinling twin tunnel is 28.24 km long on Lanzhou--Chongqing railway. This paper studies numerically pressure waves generated by a train passing through the tunnel based on one dimensional unsteady compressible non-homoentropic flow model and method of characteristic generalized Riemann variables. Passenger and steward comfort was predicted for three values of tnnnel cross-areas： 56.54, 53.06, 49.12 m^2 and for train velocity of 200 km/h. Results concluded that for Xiqinling super long tunnel the smaller cross-sectional area can satisfy the domestic comfort standard. The article provided aerodynamic basis for the choice of clearance parameters and various construction technologies for Xiqinling super long tunnel.