Forecast analysis of the refreezing of Kunlun mountain permafrost tunnel on Qing–Tibet railway in China

According to the in situ measured data of the air temperature and ground temperature inside of Kunlun mountain tunnel on Qing–Tibet railway, China, the thawed extent of the permafrost surrounding the tunnel is very large, caused by the latent heat of the cast in situ concrete lining insulation durin...

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