Study on Mechanism of Cumulative Directional Blasting of Brittle Karst Limestone in the Guizhou Province

Table 7

Blasting parameters.

Parameter	Explosive	Hole number	Aperture (m)	Hole depth (m)	Explosive quantity (kg)	Tube material	Shaped charge material	Priming material
Selected values	Emulsion explosive	Single hole	0.03	0.3	0.003	PVC	Copper	Blasting tube