Engineering Disaster Investigation and Recurrence of the Covering Effect in a Petroleum and Gas Station in Seasonally Frozen Soil Region

Table 2

Soil hydrothermal parameters [29].

Lithology	Depth of soil layer	Density (kg·m^-3)	(m^-1)		(10^-6 m·s-^1)	Thermal conductivity (W·m^-1·K^-1)		Heat capacity (kJ·m^-3·K^-1)
						Frozen	Unfrozen	Frozen	Unfrozen
Silty clay	Roadbed	2100	0.049	3.73	6.11	1.5	1.4	870	1060
Loess	Unsaturated region	1900	0.068	1.09	0.56	1.7	1.6	1010	1150