Shock and Vibration / 2019 / Article / Tab 1

Research Article

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

Table 1

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

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

219.6317.918.9618.9611.038.8510.1510.0122.5219.9721.5121.44
58.587.668.238.183.382.893.042.959.228.198.778.70
102.422.152.312.311.581.371.501.492.892.552.752.75
151.070.951.021.020.960.880.940.931.441.291.391.38
250.390.350.370.380.490.460.480.480.630.580.610.61
400.160.140.150.150.310.290.300.300.350.320.340.34

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.