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针对地铁双线隧道水平冻结工程，基于相似理论，建立一套完整的物理模型试验系统。
Aiming at horizontal freezing engineering of double-route metro, an integrated model experiment system is established based on similarity theory.
研究目的：通过计算，分析我国双线隧道中存在的瞬变压力问题，并提出相应的缓解措施。
Research methods: Take the double-track tunnel in the Lanzhou-Wunan for example, the relation graph of train speed and maximum pressure has been simulated and figured out with the formula.
研究结论：提速后，我国既有线上一些双线隧道的瞬变压力不能满足旅客乘车的“舒适度”标准。
Research conclusions: With the trains being-speed up, the transient pressure of double-track tunnel in the existing railway can not reach the standard of comfort.
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