Factor’s Influence Analysis of Frost Heave during the Twin-Tunnel Construction Using Artificial Horizontal Ground Freezing Method

Table 2

Thermophysical parameters.

Names	Density (kg/m^3)	Thermal conductivity (kcal/(m·d·°C))	Specific heat (kcal/(kg·°C))	Latent heat (kcal/kg)	Phase transition temperature range
Frozen soil	1917.5	32.46	0.27	12.736	[−0.5°C, 0°C]
Unfrozen soil	1917.5	23.14	0.34