Research on Formation Identification Based on Drilling Shock and Vibration Parameters and Energy Principle

Table 12

Drilling parameters of hole 5.

Rock classification	Compressive strength (MPa)	Axial pressure (kN)	Rotation speed (rad)	Flushing fluid pressure (MPa)	Drilling rate (cm·min^−1)	Torque (kN·m)
VI (fill)	—	—	—	—	—	—
V	0.598	2.016	101	0.071	33.1	0.9487
V/IV	15.478	2.614	113	0.092	26.8	1.0346
IV (concrete)	—	—	—	—	—	—
IV	33.145	3.186	91	0.179	13.9	1.3485
IV/III	53.487	4.135	213	0.317	15.8	1.5036
III	66.142	3.549	271	0.327	11.1	1.3948
III/II	87.457	3.918	243	0.297	9.3	1.4362
II	102.435	5.487	304	0.384	5.1	1.8956
II/I (vein)	109.469	4.156	269	0.415	2.9	1.6012