Failure Behavior of Hot-Dry-Rock (HDR) in Enhanced Geothermal Systems: Macro to Micro Scale Effects

Table 1

The UCS and tangent modulus of granite under high temperatures.

Sample number	Temperature (°C)	UCS (MPa)	Average UCS (MPa)	Tangent modulus (GPa)	Average tangent modulus (GPa)
G-20C-1	20	86.7	116.0	18.0	13.6
G-20C-2		148.4		18.1
G-20C-3		128.2		15.1
G-20C-4		124.9		15.3
G-20C-5		173.0		14.2
G-20C-6		100.1		11.3
G-20C-7		90.0		9.9
G-20C-8		99.4		10.7
G-20C-9		111.7		12.9
G-20C-10		97.7		10.4
G-200C-1	200	120.6	102.3	10.9	11.0
G-200C-2		111.5		11.7
G-200C-3		84.3		10.1
G-200C-4		92.7		11.2
G-300C-1	300	72.1	84.5	9.4	10.0
G-300C-2		63.6		9.4
G-300C-3		82.0		10.1
G-300C-4		90.2		9.8
G-300C-5		114.4		11.4
G-400C-1	400	62.4	80.1	9.7	9.8
G-400C-2		99.9		10.8
G-400C-3		78.4		8.9
G-400C-4		79.7		9.8
G-500C-1	500	80.8	79.7	9.0	9.8
G-500C-2		79.1		10.7
G-500C-3		80.2		9.8
G-500C-4		78.9		9.6