Analysis of the Development Characteristics and Influencing Factors of Freezing Temperature Field in the Cross Passage

Table 2

Characteristics of the stratum layer.

Stratum	Density (kg·m^−3)	Angle of internal friction (°)	Specific heat capacity (kJ·(kg· K)^−1)	Thermal conductivity (W·(m·K)^−1)
				Before freezing	After freezing
Gray silt layer	1918	32	0.90	1.120	1.896
Sandy silt layer	1990	26	1.32	1.480	2.130