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

Table 4

Maximum velocity and frequency of point D.

Test number	L		Velocity (cm/s)			Frequency (Hz)
			Longitudinal	Transverse	Vertical	Longitudinal	Transverse	Vertical
1	60	71.00	0.0155	0.1026	0.0925	12.23	14.02	18.13
2	50	62.77	0.0239	0.2016	0.2579	9.26	12.23	16.26
3	40	55.14	0.0356	0.4539	0.4835	12.65	10.10	24.12
4	30	48.38	0.0688	0.6348	0.7148	23.56	23.36	32.39
5	20	42.90	0.0672	0.7541	0.8469	26.79	32.31	56.26
6	10	39.25	0.1078	0.8247	1.4269	57.24	50.31	70.23
7	0	37.96	0.1536	1.4406	2.3580	79.53	87.61	90.24

L: longitudinal blasting distance; : the distance between detonation center and tower foundation.