Mechanism Study on Elevation Effect of Blast Wave Propagation in High Side Wall of Deep Underground Powerhouse

Table 1

Summary of the test results of the blasting vibration in the elevation direction in the powerhouse.

Status of construction	Numbering	Quantity of explosive (kg)	Horizontal distance (m)	Elevation (m)	Vy (cm/s)	Dominant frequency (Hz)
Rock anchor beam after casting	1	26	10	0	9.91	81.2
			10	5	7.27	5.1
			10	10	5.02	44.4
			10	20	5.19	15.3
			10	23	4.8	29.9
	2	26	20	0	3.9	26.2
			20	5	3.08	126.6
			20	10	2.57	260.4
			20	20	2.71	27
			20	23	2.5	285.2
	3	22	10	0	7.23	75.7
			10	5	6.09	11.3
			10	10	5.31	167.4
			10	20	5.3	51.9
			10	23	5.2	66
	4	22	20	0	4.2	15.7
			20	5	2.16	82.2
			20	10	1.77	85.2
			20	20	1.87	42.2
			20	23	1.76	76.8
	5	19	10	0	7.06	60.4
			10	5	6.05	293
			10	10	5.0	334.8
			10	20	5.03	21.7
			10	23	4.9	187.5
	6	19	20	0	3.9	195.3
			20	5	1.98	76.8
			20	10	1.77	97.7
			20	20	1.85	41.5
			20	23	1.6	293
Rock anchor beam before casting	7	26	10	0	9.78	71.6
			10	20	3.12	33.8
	8	26	20	0	3.94	93.8
			20	20	1.06	24.3
	9	23	10	0	6.88	176.8
			10	20	2.4	40.1
	10	23	20	0	4.12	185.2
			20	20	0.92	18.4
	11	20	10	0	6.71	74.8
			10	20	2.37	56.2
	12	20	20	0	3.72	58.6
			20	20	0.88	39.7