Research Article

Analysis of the Main Factors Influencing the Dominant Frequency of Blast Vibration

Table 2

Drilling and blasting parameters for the blast in 3# massif.

Blast site3# massif
Experiment1#2#

BlastholesMultipleSingleMultipleSingle
Blasthole diameter (mm)115115115115
Blasthole length (m)13.2–14.914.812.7–14.714.2
Blasthole spacing (m)4.54.5
Row spacing (m)4.54.5
Charge diameter (mm)70/909070/9090
Charge weight per hole (kg)66–909069–9387
Stemming length (m)4.0–5.54.04.54.5
Number of rows44
Number of blastholes11611261