Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation

Table 4

Experimental schemes for the volume of explosives.

Scheme	Volume of explosives	Blasting method
1	3 + 3 + 3 + 3 + 3 + 2 + 2 + 2 + 1	Single-borehole blasting interval one hole
2	4 + 3 + 3 + 3 + 3 + 2 + 2 + 2 + 1	Double-borehole blasting interval one hole
3	4 + 4 + 3 + 3 + 3 + 2 + 2 + 2 + 1	Three-borehole blasting interval one hole
4	4 + 4 + 3 + 3 + 3 + 2 + 2 + 2 + 2	Four-borehole blasting interval one hole
5	4 + 4 + 3 + 3 + 3 + 2 + 2 + 2 + 2	Five-borehole blasting interval one hole