Shock and Vibration / 2019 / Article / Tab 2

Research Article

Effect of Initiation Location within Blasthole on Blast Vibration Field and Its Mechanism

Table 2

Computational PPVs observed along the radial direction of the cylindrical charge.

r (m)Radial PPV (cm/s)Vertical PPV (cm/s)Vector PPV (cm/s)
ABOABABOABABOAB

216.1514.5815.5815.497.595.556.876.5317.8415.6017.0316.81
58.097.367.787.827.756.667.357.4311.209.9310.7010.79
103.112.963.123.123.803.543.743.784.914.614.874.90
152.232.152.252.261.961.871.951.972.972.852.983.00
201.711.681.741.751.061.031.071.072.011.972.042.05
301.171.171.191.190.430.420.430.431.251.241.271.27
400.890.890.900.900.240.240.240.240.920.920.930.93
500.710.710.720.720.150.150.150.150.730.730.740.74
600.590.590.600.600.100.100.100.100.600.600.610.61
700.510.510.520.520.080.080.080.080.520.520.530.53
800.450.450.450.450.060.060.060.060.450.450.450.45
1000.400.400.400.400.050.050.050.050.400.400.400.40

The letters A, B, O, and AB, respectively, denote bottom initiation, top initiation, midpoint initiation, and two-end initiation. The vector PPV denotes the synthesis of the radial and vertical PPVs.