Thermal Property of Granite in Deep Strata and Its Effect on Thermal Zone of Surrounding Rock

Table 5

Fitting relationship between thermal diffusivity, specific heat capacity, and temperature of samples at various depths.

Depth m	Thermal diffusion coefficient fitting	Specific heat capacity fitting
1500	α = -0.0046118^.t+1.6018	c = 0.005396^.t+1.404
1600	α = -0.002761^.t+1.1903	c = 0.005696^.t+1.9932
1700	α = -0.0066047^.t+2.0228	c = 0.005573^.t+1.5734
1800	α = -0.0040375^.t+1.4989	c = 0.005958^.t+1.6508
1900	α = -0.0031242^.t+1.3786	c = 0.005753^.t+2.1772
2000	α = -0.0029705^.t+1.3986	c = 0.005126^.t+2.0664