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由于通风不畅,深埋长隧道中高速列车能耗与空调及隧道中各种电力设备所散发产生的大量热量不能及时排出,会造成隧道内环境温度的持续上升。本文应用三维可压缩流体流动理论,针对列车横截面积与隧道横截面积比值阻塞比的不同,对长隧道内运行的高速列车进行了数值模拟研究,计算了车头车尾的压差阻力,车身表面的摩擦阻力及列车克服全部阻力高速运行所需能耗产生的热量,结合列车辅助设备发热,并考虑隧道与围岩之间的热传递,合理预测了不同阻塞比下高速列车运行引起的隧道内温度升高以及隧道内温度随时间的变化,可为深埋特长高速铁路隧道的设计与通风提供有益的参考。
Due to the poor ventilation, the large amount of heat generated by the energy consumption of medium and high speed trains in long, long tunnels and air-conditioning and various power equipments in the tunnel can not be discharged in time, which will result in a continuous increase of the ambient temperature in the tunnel. In this paper, based on the theory of three-dimensional compressible fluid flow, aiming at the difference of the block ratio of train cross-sectional area and tunnel cross-sectional area ratio, the numerical simulation of high speed train running in long tunnel is carried out. The frictional resistance of the surface and the heat generated by the train to overcome the energy consumption required for high speed operation of the whole resistance, combined with the heat generated by the auxiliary equipment of the train and considering the heat transfer between the tunnel and the surrounding rock, the tunnel caused by the high speed train operation under different blocking ratios is reasonably predicted The increase of the internal temperature and the change of the temperature in the tunnel over time can provide useful references for the design and ventilation of deep-buried high-speed railway tunnels.