Effects of Unidirectional In Situ Stress on Crack Propagation of a Jointed Rock Mass Subjected to Stress Wave

Table 3

Parameters of filling delay detonator and explosive in Model 2.

In situ stress (MPa)	Explosive charge	Stemming	Number of blasts
0.5	1 delay detonator	Water	1
1.0	1 delay detonator and 4.9 g explosives	Mud	1
2.0	1 delay detonator	Water	1
3.0	1 delay detonator	Water	2
4.0	1 delay detonator	Water	2
5.0	1 delay detonator	Water	2