Mechanical and Acoustic Emission Responses of Rock Fragmentation under Disc Cutter Penetration

Table 2

Values of mechanical response at cracking points.

Rock specimens	Indentation force	Penetration depth	Penetration coefficient K
	kN	mm	kN/mm
GC5	364.26	2.906	125.35
GW5	286.14	4.521	63.29
SC5	190.98	5.150	37.08
SW5	155.76	6.290	24.76