Study on Storage Conditions and Suitability Zoning of Shallow Floor Energy in Nanchang City

Table 1

Comparison of different geotechnical thermal properties in the survey area.

Geotechnical name	Specific heat capacity (kJ/(kg·°C))	Thermal conductivity (W/(m·°C))	Thermal diffusion coefficient (10^6 m^2/s)
Silty clay	1.452	1.435	0.502
Silty sand	1.142	1.481	0.665
Fine sand	1.176	1.655	0.739
Thick sand	0.654	1.783	1.517
Gravel sand	0.593	1.980	1.876
Calcareous mudstone	1.155	1.755	0.637
Sandstone	1.211	1.785	0.599
Phyllite	1.268	3.628	1.057