Vibration Characteristic of High-Voltage Tower Influenced by Adjacent Tunnel Blasting Construction

Table 3

Blasting pattern.

Excavation site	Blasting parameters	Number of holes	Hole of depth (m)	Charge weight per hole (kg)	Delay	Explosive weight per delay (kg)
Upper bench	Cut holes	6	1.2	0.6	1	3.6
	Auxiliary holes	29	1.0	0.8	3, 5, 7, 9	23.2
	Peripheral holes	31	1.0	0.29	11	8.99
Second bench	Auxiliary holes	40	1.0	0.57	1, 3, 5, 7, 9	22.8
	Peripheral holes	16	1.0	0.29	16	4.64
Lower bench	Auxiliary holes	30	1.0	0.57	1, 3, 5, 7	17.1
	Bottom plate holes	20	1.0	0.57	9	11.4