带竖井的特长铁路隧道热环境数值模拟

In this paper, the one dimensional unsteady numerical simulation was established to investigate the thermal environment in long railway tunnel with shaft. The air volume rate through shaft was simulated to study the ventilation condition of shaft. In order to investigate the thermal environment characteristics in tunnel with shaft, air temperature distributions that calculated by simulation program were compared between tunnel with shaft and no shaft tunnel. Moreover, the effect of train speed on thermal environment in tunnel was researched in the study. The results showed that the maximum air volume rate introduced through shaft was 700m3/s. Those introduced ambient air could be used to cool the high temperature air in tunnel. The air temperature in tunnel increased with the train speed increase.