Table 3: Statistics of cut holes.

No.Hole length (cm)Advance per round (cm)Utilization rate of boreholes (%)Average value (%)

130027892.791.6
230027591.7
330027391.0
430027892.7
530026789.0
630028093.3
730027391.0
830027692.0
930027591.7
1030027591.7
1130027792.3
1230027190.3