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

Table 10

Drilling parameters of hole 3.

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	0.626	2.665	79	0.106	35.3	0.715
V/IV	16.37	3.063	122	0.156	29.6	0.8975
IV (concrete)	—	—	—	—	—
IV	28.75	2.689	99	0.264	17.5	1.0548
IV/III	56.28	3.706	158	0.367	19.8	1.2354
III	67.27	4.612	216	0.348	12.5	1.3679
III/II	82.781	5.216	179	0.374	9.8	1.4685
II	—	—	—	—	—	—
II/I (vein)	—	—	—	—	—	—