Field measurements and parametric studies for the thermal environment of underground tunnel entrance in cold climate zonesChangqing Yang, Wenhao Luo, Ran Gao, Sikai Zhang, Angui Li, Wuyi Du and Xiaojie XieE3S Web Conf., 356 (2022) 02031DOI: https://doi.org/10.1051/e3sconf/202235602031