A Statistical Constitutive Model considering Deterioration for Brittle Rocks under a Coupled Thermal-Mechanical Condition

Table 3

Parameter values at different temperatures (25 MPa).

Temperature ( (°C))	Quadratic function coefficient		Average strength ( (MPa))	Uniformity coefficient ()	Damage evolution threshold point ()	Damage variable correction coefficient ()
	(10^6)
40°C	−3.87	73468.5	233.6	3.18	99.39	0.800
60°C	−6.87	82808.2	229.7	1.87	88.43	0.781
130°C	−4.48	74223.2	274.0	2.09	100.40	0.890