Effects of Different Conditions of Water Cooling at High Temperature on the Tensile Strength and Split Surface Roughness Characteristics of Hot Dry Rock

Table 2

Test scheme.

Test specimen	Heating temperature (°C)	Water temperature (°C)	The number of heating-cooling cycles (times)	Heating time (h)	Water-cooled time (h)
C1	100	20	1	4	4
C3	200	20	1	4	4
C5	300	20	1	4	4
C6	400	20	1	4	4
C7	500	20	1	4	4
C8	600	20	1	4	4
W1	300	1	1	4	4
W2	300	20	1	4	4
W3	300	40	1	4	4
W4	300	60	1	4	4
W5	300	80	1	4	4
P1	300	20	1	4	4
P2	300	20	2	4	4
P3	300	20	3	4	4
P4	300	20	4	4	4
P5	300	20	5	4	4