Rock Dynamic Fracture Characteristics Based on NSCB Impact Method

Table 3

Support restraints.

No.	L Support		R Support		Remark
	-direction	-direction	-direction	-direction
I	0	0	—	0	L Support was fixed, while R Support was smooth
II	0	0	0	0	Two supports were fully fixed
III	—	0	—	0	Two supports were fully smooth in -direction, while being restrained in -direction

“0” means that the velocity was zero; “—” means that there was no restraint.