Propagation Laws of Blasting Seismic Waves in Weak Rock Mass: A Case Study of Muzhailing Tunnel

Table 1

Parameter value of vibration velocity regression equation at different positions of the tunnel.

Regression parameter	Radial		Tangential		Vertical
	K	Α	K	α	K	α
Dome	258.04	2.01	210.09	1.93	175.20	1.81
Left arch foot on the upper bench	269.79	1.86	139.44	1.68	150.63	1.76
Right arch foot on the upper bench	210.01	1.79	175.46	1.70	146.34	1.57
Left arch foot on the middle bench	174.38	1.80	274.64	1.68	237.11	1.53
Right arch foot on the middle bench	173.07	1.81	103.63	1.62	91.39	1.33
Left arch foot on the lower bench	132.27	1.76	188.39	2.02	105.81	1.79
Right arch foot on the lower bench	130.76	2.06	90.52	1.84	123.54	2.03