Development and Application of Blast Casting Technique in Large-Scale Surface Mines: A Case Study of Heidaigou Surface Coal Mine in China

Table 3

Blasting vibration velocity of monitoring points.

Monitoring points	Horizontal (mm/s)	Vertical (mm/s)	Axial (mm/s)	Vector resultant velocity (mm/s)	Horizontal distance (m)
B1	8.51	4.3	9.9	10	800
B1	12.6	5.59	12.4	14.5	800