Research on Dynamic Response of Shallow Buried Tunnel Lining Constructed by Drilling and Blasting Method

Table 4

Comparison of simulated and measured values of peak particle velocity (with in situ stress).

Point	R/m	X velocity (cm/s)		Error /%	Y velocity (cm/s)		Error /%	Z velocity (cm/s)		Error /%	Resultant velocity (cm/s)		Error /%
		M	S		M	S		M	S		M	S
1#	15	19.75	21.37	7.56	22.54	19.82	13.68	8.59	7.89	9.27	26.18	22.99	13.87
2#	20	15.90	17.42	8.69	24.61	27.74	11.25	7.35	7.75	5.2	29.31	27.87	5.18
3#	25	8.16	7.36	10.79	7.06	6.41	10.18	8.24	8.04	2.38	10.24	9.27	10.44
4#	30	9.58	8.97	6.88	14.44	15.60	7.48	10.60	10.99	3.52	18.31	17.29	5.92
5#	35	13.12	14.97	12.30	16.76	18.23	8.05	11.77	12.44	5.39	23.33	21.26	9.73

Note: R is the distance from the measurement point to the tunnel surface, M is the measured value, and S is the simulation value.