The Vibration Characteristics of Ground of Rock Blasting in Silt-Rock Strata

Table 6

Directions of the maximum energy.

The distance from explosion source (m)	The first blasting	The second blasting	The third blasting	The forth blasting	The fifth blasting	The sixth blasting
30	X	Z	Z	Z	X	Z
60	Z	X	Z	Z	X	Z
90	Z	Z	Z	Z	X	Z
120	Y	Y	X	X	Z	Z
150	The instrument was not triggered	Z	Z	Z	Y	Z
180	Z	Z	X	The instrument was not triggered	Z	Z

Note. X was the horizontal direction pointing to the explosion source, Y was the horizontal direction perpendicular to X, and Z was the vertical direction.